Add override_repos into tripleo-ci tripleo-repos role

The tripleo-repos role in tripleo-ci defaults to current-tripleo
for master and current for everything else. There is no support
for the tripleo-ci-testing repo.

This adds 2 params: i) override_repos as a param
to tripleo-ci tripleo-repos and ii) buildcontainers_override_repos
as a param in the tripleo-buildcontainers job. ii) is passed from
periodic version of buildcontainers in [1] and is then used to
set the value of override_repos, passed into ci tripleo-repos.

The depends-on adds tripleo-ci-testing as an option for
tripleo-repos itself as it is currently unsupported.
Tracked by tripleo ci squad with [2]. See test review at [3] which
runs the periodic container build in check with this code.

Also adds /etc/yum.repos.d/ into collected buildcontainer logs.

[1] https://review.rdoproject.org/r/18975
[2] https://tree.taiga.io/project/tripleo-ci-board/task/773
[3] https://review.rdoproject.org/r/19000
Depends-On: https://review.openstack.org/638651 # tripleo-repos
Change-Id: I37bc90881ef19ae4aeace65750da4dd93da5f4e2

playbooks/tripleo-buildcontainers/defaults/main.yaml

@@ -2,3 +2,4 @@ push_registry: "127.0.0.1:8787"
 push_tag: "latest"
 push_containers: "false"
 use_buildah: false
+buildcontainers_override_repos: ""

playbooks/tripleo-buildcontainers/post.yaml

@@ -21,6 +21,7 @@
         rsync -var --no-links /var/log/ {{ workspace }}/logs/system/ || true
         rsync -var --no-links /etc/docker/ {{ workspace }}/etc/docker/ || true
         rsync -var --no-links /etc/containers/ {{ workspace }}/etc/containers/ || true
+        rsync -var --no-links /etc/yum.repos.d/ {{ workspace }}/etc/yum.repos.d/ || true
         gzip -r "{{ workspace }}/logs"  "{{ workspace }}/conf" "{{ workspace }}/etc"
         chmod -R a+r "{{ workspace }}"
         chown -R {{ ansible_user }}: "{{ workspace }}"

playbooks/tripleo-buildcontainers/pre.yaml

@@ -3,6 +3,7 @@
   roles:
     - role: tripleo-repos
       tripleo_repos_repository: "{{ ansible_user_dir }}/{{ zuul.projects['git.openstack.org/openstack/tripleo-repos'].src_dir }}"
+      override_repos: "{{ buildcontainers_override_repos | default('') }}"
   tasks:
     - name: Include common vars
       include_vars:

roles/tripleo-repos/defaults/main.yml

@@ -4,3 +4,5 @@ tripleo_repos_repository: "git+https://git.openstack.org/openstack/tripleo-repos
 workspace: "{{ ansible_user_dir }}"
 centos_mirror_host: "http://mirror.centos.org"
 rdo_mirror_host: "https://trunk.rdoproject.org"
+override_repos: ""
+

roles/tripleo-repos/tasks/main.yml

@@ -34,10 +34,12 @@
     CENTOS_MIRROR_HOST=${CENTOS_MIRROR_HOST:-"{{ centos_mirror_host }}"}
     RDO_MIRROR_HOST=${NODEPOOL_RDO_PROXY:-"{{ rdo_mirror_host }}"}
 
-    if [ "{{ ci_branch | default('master') }}" == "master" ]; then
-      REPO=current-tripleo
+    if [ "{{ override_repos }}" != "" ]; then
+        REPO="{{ override_repos }}"
+    elif [ "{{ ci_branch | default('master') }}" == "master" ]; then
+        REPO=current-tripleo
     else
-      REPO=current
+        REPO=current
     fi
 
     tripleo-repos -b "{{ ci_branch | default('master') }}" \