Add support for the openSUSE Leap distributions

Add support for the openSUSE Leap distributions. Nothing special is
required for this except for adding the appropriate distro variables
file and also update the zypper cache before package installation.

Change-Id: Ibb3a6633724ce3555d5262fb44914d6cddfe1481

meta/main.yml

@@ -23,6 +23,14 @@ galaxy_info:
     - name: Ubuntu
       versions:
         - xenial
+    - name: EL
+      versions:
+        - 7
+    - name: opensuse
+      versions:
+        - 42.1
+        - 42.2
+        - 42.3
   categories:
     - cloud
     - python

tasks/heat_install.yml

@@ -17,7 +17,7 @@
   package:
     name: "{{ heat_distro_packages }}"
     state: "{{ heat_package_state }}"
-    update_cache: "{{ (ansible_pkg_mgr == 'apt') | ternary('yes', omit) }}"
+    update_cache: "{{ (ansible_pkg_mgr in ['apt', 'zypper']) | ternary('yes', omit) }}"
     cache_valid_time: "{{ (ansible_pkg_mgr == 'apt') | ternary(cache_timeout, omit) }}"
   register: install_packages
   until: install_packages|success

vars/suse-42.yml

@@ -0,0 +1 @@
+redhat-7.yml