Ensure yaml packages are installed

Since all of our ansible modules have 'import yaml', we should ensure
that we have the correct yaml python packages installed.  When running
in containers, they aren't there by default.

Change-Id: I911f589817d7142711b8ef3c675a8098a3ebb0f3

tripleo_ansible/roles/test_deps/tasks/main.yml

@@ -83,6 +83,13 @@
       when:
         - (ansible_os_family | lower) == 'redhat'
 
+    - name: Install python yaml libs
+      package:
+        name: "{{ test_deps_yaml_packages }}"
+        state: present
+      when:
+        - (ansible_os_family | lower) == 'redhat'
+
     - name: Install extra packages
       package:
         name: "{{ test_deps_extra_packages }}"

tripleo_ansible/roles/test_deps/vars/centos-7.yml

@@ -16,6 +16,8 @@
 
 
 test_deps_repo: https://trunk.rdoproject.org/centos7/current
+test_deps_yaml_packages:
+  - PyYAML
 test_deps_selinux_packages:
   - libselinux-python
 test_deps_tripleo_packages:

tripleo_ansible/roles/test_deps/vars/centos-8.yml

@@ -16,6 +16,8 @@
 
 
 test_deps_repo: https://trunk.rdoproject.org/centos8-master/current
+test_deps_yaml_packages:
+  - python3-pyyaml
 test_deps_selinux_packages:
   - python3-libselinux
 test_deps_tripleo_packages:

tripleo_ansible/roles/test_deps/vars/redhat-8.yml

@@ -16,6 +16,8 @@
 
 
 test_deps_repo: https://trunk.rdoproject.org/redhat8-master/current
+test_deps_yaml_packages:
+  - python3-pyyaml
 test_deps_selinux_packages:
   - python3-libselinux
 test_deps_tripleo_packages: