CI: Install python deps, mark oraclelinux rsyslog as skipped

setuptools is missing from infra image - so it needs to be installed.

Copy cat of a kolla-ansible change: https://review.opendev.org/#/c/735808/

Disables rsyslog build on oraclelinux (both source and binary) and
tripleoclient (binary).

Depends-On: https://review.opendev.org/737829
Change-Id: I6068abcbc0e73eeab77b0aa99983a95adc6defd3

kolla/image/build.py

@@ -198,14 +198,17 @@ SKIPPED_IMAGES = {
         "monasca-thresh",
         "nova-mksproxy",
         "ovsdpdk",
+        "rsyslog",
         "searchlight-base",
         "solum-base",
+        "tripleoclient",
         "vmtp",
         "zun-base"
     ],
     'oraclelinux+source': [
         "bifrost-base",
         "ovsdpdk",
+        "rsyslog",
         "tripleoclient",
         # TODO(jeffrey4l): remove tripleo-ui when following bug is fixed
         # https://bugs.launchpad.net/tripleo/+bug/1744215

tests/playbooks/pre.yml

@@ -16,7 +16,49 @@
         path: "{{ kolla_build_logs_dir }}"
         state: directory
 
+    - block:
+
+        - name: Ensure yum-utils is installed
+          # NOTE(mgoddard): The CentOS image used in CI has epel-release installed,
+          # but the configure-mirrors role used by Zuul disables epel. Since we
+          # install epel-release and expect epel to be enabled, enable it here.
+          package:
+            name: yum-utils
+            state: present
+
+        - name: Enable the EPEL repository
+          command: yum-config-manager --enable epel
+
+      become: true
+      when:
+        - ansible_os_family == "RedHat"
+
+    - name: Install Python2 modules
+      become: true
+      package:
+        name:
+          - python-pip
+          - python-setuptools
+          - python-wheel
+          - python-virtualenv
+
+    - name: Install virtualenv on Debian systems
+      # NOTE(hrw): On RedHat systems it is part of python3-virtualenv
+      package:
+        name:
+          - virtualenv
+      become: true
+      when:
+        ansible_os_family == "Debian"
+
+    - name: Upgrade pip to latest version
+      # NOTE(mnasiadka): pip 8.x delivered with EPEL has problems installing
+      # zipp and configparser
+      become: true
+      command: "pip install --upgrade pip"
+
     - name: Ensure tox is installed
       pip:
         name: tox
+        virtualenv: "{{ ansible_user_dir }}/tox-venv"
       become: true

tests/playbooks/run.yml

@@ -37,6 +37,6 @@
         dest: /etc/kolla/template_overrides.j2
 
     - name: Run tox
-      command: tox -e {{ action }}-{{ base_distro }}-{{ install_type }}
+      command: "{{ ansible_user_dir }}/tox-venv/bin/tox -e {{ action }}-{{ base_distro }}-{{ install_type }}"
       args:
         chdir: "{{ zuul.project.src_dir }}"