Speed up repository check

Even if the subcription command is indempotent it takes around 15/16sec
to get it done. Where with the simple yum check we lower down this to
3sec.

Signed-off-by: leseb <seb@redhat.com>

roles/ceph-common/tasks/prerequisite_rh_storage_cdn_install.yml

@@ -4,17 +4,41 @@
   register: subscription
   changed_when: false
 
+- name: check if the red hat storage monitor repo is already present
+  shell: yum --noplugins --cacheonly repolist | grep -sq rhel-7-server-rhceph-1.3-mon-rpms
+  changed_when: false
+  register: rh_storage_mon_repo
+  when: mon_group_name in group_names
+
 - name: enable red hat storage monitor repository
   command: subscription-manager repos --enable rhel-7-server-rhceph-1.3-mon-rpms
   changed_when: false
-  when: mon_group_name in group_names
+  when:
+    mon_group_name in group_names and
+    rh_storage_mon_repo.rc != 0
+
+- name: check if the red hat storage osd repo is already present
+  shell: yum --noplugins --cacheonly repolist | grep -sq rhel-7-server-rhceph-1.3-mon-rpms
+  changed_when: false
+  register: rh_storage_osd_repo
+  when: osd_group_name in group_names
 
 - name: enable red hat storage osd repository
   command: subscription-manager repos --enable rhel-7-server-rhceph-1.3-osd-rpms
   changed_when: false
-  when: osd_group_name in group_names
+  when:
+    osd_group_name in group_names and
+    rh_storage_osd_repo.rc != 0
+
+- name: check if the red hat storage rados gateway repo is already present
+  shell: yum --noplugins --cacheonly repolist | grep -sq rhel-7-server-rhceph-1.3-mon-rpms
+  changed_when: false
+  register: rh_storage_rgw_repo
+  when: rgw_group_name in group_names
 
 - name: enable red hat storage rados gateway repository
   command: subscription-manager repos --enable rhel-7-server-rhceph-1.3-tools-rpms
   changed_when: false
-  when: rgw_group_name in group_names
+  when:
+    rgw_group_name in group_names and
+    rh_storage_rgw_repo.rc != 0