erase data only if variable is set.

fix block indentatation

Signed-off-by: Saravanakumar Arumugam <sarumuga@redhat.com>

roles/openshift_storage_glusterfs/tasks/glusterfs_uninstall.yml

@@ -99,6 +99,7 @@
   delegate_to: "{{ item }}"
   with_items: "{{ glusterfs_nodes | default([]) }}"
   failed_when: False
+  when: glusterfs_wipe
 
   # Runs "lvremove -ff <vg>; vgremove -fy <vg>; pvremove -fy <pv>" for every device found to be a physical volume.
 - name: Clear GlusterFS storage device contents
@@ -111,4 +112,5 @@
   delay: 1
   retries: 30
   when:
+  - glusterfs_wipe
   - item.stdout_lines | count > 0

roles/openshift_storage_glusterfs/tasks/uninstall.yml

@@ -1,10 +1,12 @@
 ---
-- block:
-  - include_tasks: glusterfs_config_facts.yml
-  - include_tasks: glusterfs_uninstall.yml
-    when: "'glusterfs' in groups and groups['glusterfs'] | length > 0"
+- name: uninstall glusterfs
+  block:
+    - include_tasks: glusterfs_config_facts.yml
+    - include_tasks: glusterfs_uninstall.yml
+  when: "'glusterfs' in groups and groups['glusterfs'] | length > 0"
 
-- block:
-  - include_tasks: glusterfs_registry_facts.yml
-  - include_tasks: glusterfs_uninstall.yml
-    when: "'glusterfs_registry' in groups and groups['glusterfs_registry'] | length > 0"
+- name: uninstall glusterfs registry
+  block:
+    - include_tasks: glusterfs_registry_facts.yml
+    - include_tasks: glusterfs_uninstall.yml
+  when: "'glusterfs_registry' in groups and groups['glusterfs_registry'] | length > 0"