Drop support for py36

Change-Id: I6f0cbde23f0a0db75bdb3e598ee862af0bad0dba

.zuul.yaml

@@ -13,22 +13,6 @@
         TMPDIR: '{{ ansible_env.HOME }}/xfstmp'
         COLUMNS: 240
 
-- job:
-    name: swift-tox-py36
-    parent: swift-tox-base
-    nodeset: ubuntu-bionic
-    description: |
-      Run unit-tests for swift under cPython version 3.6.
-
-      Uses tox with the ``py36`` environment.
-      It sets TMPDIR to an XFS mount point created via
-      tools/test-setup.sh.
-    vars:
-      tox_envlist: py36
-      bindep_profile: test py36
-      python_version: 3.6
-    post-run: tools/playbooks/common/cover-post.yaml
-
 - job:
     name: swift-tox-py37
     parent: swift-tox-base
@@ -499,8 +483,8 @@
     # This seems defensible for a l-c job
     nodeset: ubuntu-bionic
     vars:
-      bindep_profile: test py36
-      python_version: 3.6
+      bindep_profile: test py37
+      python_version: 3.7
       tox_environment:
         TMPDIR: '{{ ansible_env.HOME }}/xfstmp'
 
@@ -637,7 +621,7 @@
             irrelevant-files: *docker-irrelevant-files
 
         # Unit tests
-        - swift-tox-py36:
+        - swift-tox-py37:
             irrelevant-files: &unittest-irrelevant-files
               - ^(api-ref|doc|releasenotes)/.*$
               - ^test/(cors|functional|probe|s3api)/.*$
@@ -724,7 +708,7 @@
             irrelevant-files: *docker-irrelevant-files
         - swift-upload-image-py3:
             irrelevant-files: *docker-irrelevant-files
-        - swift-tox-py36
+        - swift-tox-py37
         - swift-tox-py39
         - swift-tox-py312
         - swift-tox-func-py312
@@ -758,7 +742,6 @@
             irrelevant-files: *tempest-irrelevant-files
     experimental:
       jobs:
-        - swift-tox-py37
         - swift-tox-py38
         - swift-tox-py310
         - swift-tox-py311

setup.cfg

@@ -7,7 +7,7 @@ long_description_content_type = text/x-rst
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 url = https://docs.openstack.org/swift/latest/
-python_requires = >=3.6
+python_requires = >=3.7
 project_urls =
     Documentation = https://docs.openstack.org/swift/latest/
     Bug Tracker = https://bugs.launchpad.net/swift
@@ -22,7 +22,6 @@ classifier =
     Operating System :: POSIX :: Linux
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9