[contrib/heketi]: tear down additions and fixes. Heketi updated to version 9 (#5027)

* lvm packages removal during tear down skipped by default
  * lvm utils execution PATH fixed for CentOS/RH
  * Heketi updated to the latest version 9

Signed-off-by: Vitaliy Dmitriev <vi7alya@gmail.com>

contrib/network-storage/heketi/README.md

@@ -14,3 +14,5 @@ ansible-playbook --ask-become -i inventory/sample/k8s_heketi_inventory.yml contr
 ```
 ansible-playbook --ask-become -i inventory/sample/k8s_heketi_inventory.yml contrib/network-storage/heketi/heketi-tear-down.yml
 ```
+
+Add `--extra-vars "heketi_remove_lvm=true"` to the command above to remove LVM packages from the system

contrib/network-storage/heketi/roles/provision/templates/heketi-bootstrap.json.j2

@@ -56,7 +56,7 @@
             "serviceAccountName": "heketi-service-account",
             "containers": [
               {
-                "image": "heketi/heketi:7",
+                "image": "heketi/heketi:9",
                 "imagePullPolicy": "Always",
                 "name": "deploy-heketi",
                 "env": [

contrib/network-storage/heketi/roles/provision/templates/heketi-deployment.json.j2

@@ -68,7 +68,7 @@
             "serviceAccountName": "heketi-service-account",
             "containers": [
               {
-                "image": "heketi/heketi:7",
+                "image": "heketi/heketi:9",
                 "imagePullPolicy": "Always",
                 "name": "heketi",
                 "env": [

contrib/network-storage/heketi/roles/tear-down-disks/defaults/main.yml

+---
+heketi_remove_lvm: false

contrib/network-storage/heketi/roles/tear-down-disks/tasks/main.yml

@@ -14,6 +14,8 @@
   when: "ansible_os_family == 'Debian'"
 
 - name: "Get volume group information."
+  environment:
+    PATH: "{{ ansible_env.PATH }}:/sbin"  # Make sure we can workaround RH / CentOS conservative path management
   become: true
   shell: "pvs {{ disk_volume_device_1 }} --option vg_name | tail -n+2"
   register: "volume_groups"
@@ -21,12 +23,16 @@
   changed_when: false
 
 - name: "Remove volume groups."
+  environment:
+    PATH: "{{ ansible_env.PATH }}:/sbin"  # Make sure we can workaround RH / CentOS conservative path management
   become: true
   command: "vgremove {{ volume_group }} --yes"
   with_items: "{{ volume_groups.stdout_lines }}"
   loop_control: { loop_var: "volume_group" }
 
 - name: "Remove physical volume from cluster disks."
+  environment:
+    PATH: "{{ ansible_env.PATH }}:/sbin"  # Make sure we can workaround RH / CentOS conservative path management
   become: true
   command: "pvremove {{ disk_volume_device_1 }} --yes"
   ignore_errors: true
@@ -36,11 +42,11 @@
   yum:
     name: "lvm2"
     state: "absent"
-  when: "ansible_os_family == 'RedHat'"
+  when: "ansible_os_family == 'RedHat' and heketi_remove_lvm"
 
 - name: "Remove lvm utils (Debian)"
   become: true
   apt:
     name: "lvm2"
     state: "absent"
-  when: "ansible_os_family == 'Debian'"
+  when: "ansible_os_family == 'Debian' and heketi_remove_lvm"