test_dnsrecord.yml: Fixed missing admin password

The task "Verify if modification worked" failed with PR #545 because the
ipaadmin_password was missing in the task.

tests/dnsrecord/test_dnsrecord.yml

@@ -1374,6 +1374,7 @@
 
   - name: Verify if modification worked.
     ipadnsrecord:
+      ipaadmin_password: SomeADMINpassword
       zone_name: "{{ testzone }}"
       name: _ftp._tcp
       uri_rec: 10 1 ftp://ftp.host04.{{ testzone }}/public