Allow the use of multiple values with auth_ind variable.

This patch changes auth_ind variable to receive a list of values
instead of a single one, so that more than one value can be set
at once.

Tests have been updated to reflect the change.

tests/service/test_service.yml

@@ -113,7 +113,7 @@
         - PAD
       auth_ind: otp
       skip_host_check: no
-      force: no
+      force: yes
       requires_pre_auth: yes
       ok_as_delegate: no
       ok_to_auth_as_delegate: no
@@ -475,6 +475,26 @@
     register: result
     failed_when: result.changed
 
+  - name: Ensure service is present, with multiple auth_ind values.
+    ipaservice:
+      ipaadmin_password: SomeADMINpassword
+      name: "HTTP/{{ svc_fqdn }}"
+      auth_ind: otp,radius
+      skip_host_check: no
+      force: yes
+    register: result
+    failed_when: not result.changed
+
+  - name: Ensure service is present, with multiple auth_ind values, again.
+    ipaservice:
+      ipaadmin_password: SomeADMINpassword
+      name: "HTTP/{{ svc_fqdn }}"
+      auth_ind: otp,radius
+      skip_host_check: no
+      force: yes
+    register: result
+    failed_when: result.changed
+
   # cleanup
 
   - name: Ensure services are absent.