Fix rhel_repos disable command

roles/openshift_repos/tasks/rhel_repos.yml

@@ -6,11 +6,10 @@
   failed_when: repo_rhui.rc == 11
 
 - name: Disable RHEL rhui repositories
-  command: bash -c "yum-config-manager \
+  command: yum-config-manager \
     --disable 'rhui-REGION-client-config-server-7' \
     --disable 'rhui-REGION-rhel-server-rh-common' \
-    --disable 'rhui-REGION-rhel-server-releases' \
-    --disable 'rhui-REGION-client-config-server-7'"
+    --disable 'rhui-REGION-rhel-server-releases'
   when: repo_rhui.changed
 
 - name: Ensure RHEL repositories are enabled