Check if snmpd is enabled for upgrade_tasks

This check should prevent some error when the upgrade
tasks checks if the snmpd is stopped in step 1

Depends-On: https://review.opendev.org/#/c/695234/
Depends-On: https://review.opendev.org/#/c/695419/
Depends-On: https://review.opendev.org/#/c/695562/
Depends-On: https://review.opendev.org/#/c/696855/
Depends-On: https://review.opendev.org/#/c/695929/
Depends-On: https://review.opendev.org/#/c/696673/

Closes-Bug: #1853812

(cherry picked from commit 709a6b78bb)

Change-Id: I5cdc9ef6a20b7d18aaa802927959b81a08334753

deployment/snmp/snmp-baremetal-puppet.yaml

@@ -89,6 +89,17 @@ outputs:
       step_config: |
         include ::tripleo::profile::base::snmp
       upgrade_tasks:
+        - when: step|int == 0
+          block:
+            - name: Check if snmpd is enabled
+              command: systemctl is-enabled --quiet snmpd
+              ignore_errors: True
+              register: snmpd_enabled_result
+            - name: Set fact snmpd_enabled
+              set_fact:
+                snmpd_enabled: "{{ snmpd_enabled_result.rc == 0 }}"
         - name: Stop snmp service
-          when: step|int == 1
+          when:
+            - step|int == 1
+            - snmpd_enabled|bool
           service: name=snmpd state=stopped