sap_ha_pacemaker_cluster: fix for check mode

  - fixed a conditional that failed in check-mode
  - added tag to allow running in check-mode without executing ha_cluster

Author: ja9fuchs

roles/sap_ha_pacemaker_cluster/tasks/RedHat/pre_steps_nwas_ascs_ers.yml

@@ -20,4 +20,5 @@
       when:
         - sap_ha_pacemaker_cluster_nwas_cs_ers_simple_mount | bool
         - __sap_ha_pacemaker_cluster_sapstartsrv_check.stdout is defined
+        - __sap_ha_pacemaker_cluster_sapstartsrv_check.stdout | length > 0
         - "(__sap_ha_pacemaker_cluster_sapstartsrv_check.stdout) is version(__sap_ha_pacemaker_cluster_nwas_simple_mount_version, '<')"

roles/sap_ha_pacemaker_cluster/tasks/main.yml

@@ -214,6 +214,7 @@
       ansible.builtin.import_role:
         name: "{{ sap_ha_pacemaker_cluster_system_roles_collection }}.ha_cluster"
       no_log: "{{ __sap_ha_pacemaker_cluster_no_log }}"  # some parameters contain secrets
+      tags: run_ha_cluster
 
 
     # Corosync post-inst