CI: Move off CentOS 8

This is a combination of 2 commits.

========================================

CI: Move probe tests to centos 9 stream

Pin selenium to 3.x for now, until we can run down the issues with 4.x

========================================

CI: Move off CentOS 8

Remove swift-tox-py36-centos-8-stream job entirely.

Move the following jobs to CentOS 9:

  - swift-tox-func-s3api-ceph-s3tests-tempauth
  - swift-tox-func-s3api-tests-tempauth
  - swift-multinode-rolling-upgrade, as well as the other rolling
    upgrade jobs

Remove the swift-multinode-rolling-upgrade-victoria job, as py39
support (required for CentOS 9) was not added until wallaby.

========================================

Conflicts:
  .zuul.yaml

NOTE(elod.illes): this patch is backported to unmaintained/zed as
CentOS Stream 8 is EOL and centos-8-stream nodeset was removed from
Zuul and it gives a config error: 'The nodeset "centos-8-stream" was
not found.' Besides, official Zed runtimes [1] contains CentOS Stream 9
and python 3.9.

[1] https://governance.openstack.org/tc/reference/runtimes/zed.html

Related-Change: I596415d17f77f48a6e8a63a61b734a8ca0865847
Change-Id: I4f6b9c07af7bc768654f1a5d0c66b048e0f2c9c1
(cherry picked from commit 2032fb214e)

.zuul.yaml

@@ -45,11 +45,6 @@
         NOSE_COVER_HTML_DIR: '{toxinidir}/cover'
     post-run: tools/playbooks/common/cover-post.yaml
 
-- job:
-    name: swift-tox-py36-centos-8-stream
-    parent: swift-tox-py36
-    nodeset: centos-8-stream
-
 - job:
     name: swift-tox-py37
     parent: swift-tox-base
@@ -285,13 +280,13 @@
     name: swift-tox-func-s3api-ceph-s3tests-tempauth
     parent: unittests
     voting: false
-    nodeset: centos-8-stream
+    nodeset: centos-9-stream
     description: |
       Setup a SAIO dev environment and run ceph-s3tests
     timeout: 5400
     vars:
       s3_acl: yes
-      bindep_profile: test py36
+      bindep_profile: test py39
     pre-run:
       - tools/playbooks/common/install_dependencies.yaml
       - tools/playbooks/saio_single_node_setup/setup_saio.yaml
@@ -306,13 +301,13 @@
 - job:
     name: swift-tox-func-s3api-tests-tempauth
     parent: unittests
-    nodeset: centos-8-stream
+    nodeset: centos-9-stream
     description: |
       Setup a SAIO dev environment and run our s3api test suite
     timeout: 1800
     vars:
       s3_acl: yes
-      bindep_profile: test py36
+      bindep_profile: test py39
     pre-run:
       - tools/playbooks/common/install_dependencies.yaml
       - tools/playbooks/saio_single_node_setup/setup_saio.yaml
@@ -324,15 +319,15 @@
       - tools/playbooks/probetests/post.yaml
 
 - job:
-    name: swift-probetests-centos-8-stream
+    name: swift-probetests-centos-9-stream
     parent: unittests
-    nodeset: centos-8-stream
+    nodeset: centos-9-stream
     description: |
       Setup a SAIO dev environment and run Swift's probe tests
       under Python 3.
     timeout: 7200
     vars:
-      bindep_profile: test py36
+      bindep_profile: test py39
     pre-run:
       - tools/playbooks/common/install_dependencies.yaml
       - tools/playbooks/saio_single_node_setup/setup_saio.yaml
@@ -341,12 +336,12 @@
     post-run: tools/playbooks/probetests/post.yaml
 
 - job:
-    name: swift-probetests-centos-8-stream-arm64
+    name: swift-probetests-centos-9-stream-arm64
-    parent: swift-probetests-centos-8-stream
+    parent: swift-probetests-centos-9-stream
     nodeset:
       nodes:
-        - name: swift-centos-8-stream-arm64
+        - name: swift-centos-9-stream-arm64
-          label: centos-8-stream-arm64
+          label: centos-9-stream-arm64
     description: |
       Setup a SAIO dev environment and run Swift's probe tests
       under Python 3 on top of arm64 architecture.
@@ -354,7 +349,7 @@
 
 - job:
     name: swift-func-cors
-    parent: swift-probetests-centos-8-stream
+    parent: swift-probetests-centos-9-stream
     description: |
       Setup a SAIO dev environment and run Swift's CORS functional tests
     timeout: 1200
@@ -367,18 +362,18 @@
     post-run: tools/playbooks/cors/post.yaml
 
 - nodeset:
-    name: swift-five-nodes-py3
+    name: swift-five-nodes-centos-9
     nodes:
       - name: test-runner1
-        label: centos-8-stream
+        label: centos-9-stream
       - name: proxy1
-        label: centos-8-stream
+        label: centos-9-stream
       - name: account1
-        label: centos-8-stream
+        label: centos-9-stream
       - name: container1
-        label: centos-8-stream
+        label: centos-9-stream
       - name: object1
-        label: centos-8-stream
+        label: centos-9-stream
     groups:
       - name: test-runner
         nodes:
@@ -410,12 +405,12 @@
 - job:
     name: swift-multinode-rolling-upgrade
     parent: multinode
-    nodeset: swift-five-nodes-py3
+    nodeset: swift-five-nodes-centos-9
     description: |
       Build a 4 node swift cluster and run functional tests
     timeout: 5400
     vars:
-      bindep_profile: test py36
+      bindep_profile: test py39
     pre-run:
       - tools/playbooks/multinode_setup/pre.yaml
       - tools/playbooks/common/install_dependencies.yaml
@@ -425,12 +420,6 @@
     run: tools/playbooks/multinode_setup/run.yaml
     post-run: tools/playbooks/probetests/post.yaml
 
-- job:
-    name: swift-multinode-rolling-upgrade-victoria
-    parent: swift-multinode-rolling-upgrade
-    vars:
-      previous_swift_version: origin/unmaintained/victoria
-
 - job:
     name: swift-multinode-rolling-upgrade-wallaby
     parent: swift-multinode-rolling-upgrade
@@ -716,7 +705,7 @@
         - swift-tox-func-ec-py38
         - swift-func-cors
         - swift-tox-func-s3api-tests-tempauth
-        - swift-probetests-centos-8-stream:
+        - swift-probetests-centos-9-stream:
             irrelevant-files: *probetest-irrelevant-files
         - swift-dsvm-functional:
             irrelevant-files: *functest-irrelevant-files
@@ -735,11 +724,9 @@
       jobs:
         - swift-tox-py37
         - swift-tox-py38
-        - swift-tox-py36-centos-8-stream
         - swift-tox-func-py39-centos-9-stream
         - swift-tox-func-encryption-py39-centos-9-stream
         - swift-tox-func-ec-py39-centos-9-stream
-        - swift-multinode-rolling-upgrade-victoria
         - swift-multinode-rolling-upgrade-wallaby
         - swift-multinode-rolling-upgrade-xena
         - swift-multinode-rolling-upgrade-master:

tools/playbooks/common/install_dependencies.yaml

@@ -24,13 +24,13 @@
         name: pip<21
         extra_args: --upgrade
 
-    - name: install rsync-daemon - CentOS 8
+    - name: install rsync-daemon - CentOS 8, 9
       package:
         name: rsync-daemon
         state: present
       when:
         - ansible_facts['distribution'] == "CentOS"
-        - ansible_facts['distribution_major_version'] == "8"
+        - ansible_facts['distribution_major_version'] != "7"
 
     - name: install python modules with pip
       pip: name={{ item }} state=present extra_args='--upgrade'

tools/playbooks/cors/install_selenium.yaml

@@ -5,9 +5,15 @@
       yum:
         name: xorg-x11-server-Xvfb
         state: present
+    # Note that more recent branches would require boto3, which would
+    # (eventually) enforce a similar version cap on urllib3
+    - name: cap urllib3
+      pip:
+        name: 'urllib3<2'
+        state: present
     - name: install selenium
       pip:
-        name: selenium
+        name: 'selenium<4'
         state: present
     - name: install firefox
       yum: