SUSE: Drop OBS repositories for openSUSE Leap < 42.3

We were installing additional repos for the apt-cacher-ng and
liberasurecode packages which are only necessary for Leap < 42.3.
However, < 42.3 is now EOL so lets drop these repositories since we
can fetch these packages from the default repos in 42.3

Change-Id: I4ba16ea660907c3fb481a9e80d73b750c2f4c138

meta/main.yml

@@ -28,7 +28,7 @@ galaxy_info:
         - 7
     - name: opensuse
       versions:
-        - all
+        - 42.3
   categories:
     - cloud
     - python

tasks/repo_cacher.yml

@@ -20,31 +20,6 @@
   tags:
     - repo_server-install
 
-- name: Enable zypper repositories (SUSE)
-  zypper_repository:
-    refresh: yes
-    name: "{{ item.name }}"
-    repo: "{{ item.repo }}"
-  register: zypper_repository_added
-  with_items:
-    - "{{ zypper_repositories }}"
-  when:
-    - ansible_pkg_mgr == 'zypper'
-  tags:
-    - repo_server-install
-
-# NOTE(hwoarang): We need to run this right after we add the repos and
-# before we install any packages so it can't be a handler unless we
-# move everything to pre_tasks
-- name: Refresh zypper repository (SUSE)
-  command: zypper --gpg-auto-import-keys ref
-  when:
-    - ansible_pkg_mgr == 'zypper'
-    - zypper_repository_added.changed
-  tags:
-    - skip_ansible_lint
-    - repo_server-install
-
 - name: Install repo caching server packages
   package:
     name: "{{ repo_pkg_cache_server_distro_packages }}"

vars/suse.yml

@@ -14,15 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-zypper_repositories:
-  # NOTE(hwoarang): apt-cacher-ng and liberasurecode do not exist for
-  # Leap < 42.3 so we need to grab them directly from the devel repo.
-  # Remove this when support for Leap < 42.3 is gone
-  - name: "OBS:Server:Proxy"
-    repo: http://download.opensuse.org/repositories/server:/proxy/openSUSE_Leap_{{ ansible_distribution_version }}
-  - name: "OBS:devel:libraries:c_c++"
-    repo: http://download.opensuse.org/repositories/devel:/libraries:/c_c++/openSUSE_Leap_{{ ansible_distribution_version }}/
-
 systemd_utils_prefix: "/usr/lib/systemd"
 
 repo_nginx_pid: /var/run/nginx.pid