Fix ansible syntax to avoid ansible deprecation warnings (#3512)

* failed

* version_compare

* succeeded

* skipped

* success

* version_compare becomes version since ansible 2.5

* ansible minimal version updated in doc and spec

* last version_compare

roles/vault/tasks/bootstrap/start_vault_temp.yml

@@ -20,7 +20,7 @@
     url: "http://localhost:{{ vault_port }}/"
     secret_shares: 1
     secret_threshold: 1
-  until: "vault_temp_init|succeeded"
+  until: "vault_temp_init is succeeded"
   retries: 4
   delay: "{{ retry_stagger | random + 3 }}"
   register: vault_temp_init

roles/vault/tasks/shared/check_vault.yml

@@ -4,7 +4,7 @@
   shell: docker stop {{ vault_temp_container_name }} || rkt stop {{ vault_temp_container_name }}
   failed_when: false
   register: vault_temp_stop
-  changed_when: vault_temp_stop|succeeded
+  changed_when: vault_temp_stop is succeeded
 
 # Check if vault is reachable on the localhost
 - name: check_vault | Attempt to pull local https Vault health

roles/vault/tasks/shared/find_leader.yml

@@ -7,7 +7,7 @@
     method: HEAD
     status_code: 200,429,501,503
   register: vault_leader_check
-  until: "vault_leader_check|succeeded"
+  until: "vault_leader_check is succeeded"
   retries: 10
 
 - name: find_leader | Set fact for current http leader