sap_ha_pacemaker_cluster: fix internal-error

[ja9fuchs]

For some reason the LSR collection variable is in the way of the ansible syntax-check of some tools, when the task that calls the ha_cluster LSR uses import_role.
The same syntax works without errors when the task uses include_role instead.

Fixes galaxy-importer error "internal-error: Unexpected error code 1".

[marcelmamula]

LGTM, Very refreshing to see all green checks

[sean-freeman]

@ja9fuchs I'm 99.9999% sure you verified the difference in the logic between these two built-in modules, but for sanity purposes please find my own notes about the difference at the Playbook level.....

# Use include_role / include_tasks inside Ansible Task block, instead of import_roles.
# This ensures Ansible Roles, and the tasks within, will be parsed in sequence instead
# of parsing at Playbook initialisation.