Tests: Provide AD cleanup for trust tests

Providing cleanup of trust information from AD machines for trusts tests.

https://fedorahosted.org/freeipa/ticket/6396

Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>

ipatests/test_integration/tasks.py

@@ -509,6 +509,17 @@ def remove_trust_with_ad(master, ad_domain):
     range_name = ad_domain.upper() + '_id_range'
     master.run_command(['ipa', 'idrange-del', range_name])
 
+    remove_trust_info_from_ad(master, ad_domain)
+
+
+def remove_trust_info_from_ad(master, ad_domain):
+    # Remove record about trust from AD
+    master.run_command(['rpcclient', ad_domain,
+                        '-U\\Administrator%{}'.format(
+                            master.config.ad_admin_password),
+                        '-c', 'deletetrustdom {}'.format(master.domain.name)],
+                       raiseonerr=False)
+
 
 def configure_auth_to_local_rule(master, ad):
     """

ipatests/test_integration/test_trust.py

@@ -35,6 +35,9 @@ class ADTrustBase(IntegrationTest):
 
     @classmethod
     def install(cls, mh):
+        if not cls.master.transport.file_exists('/usr/bin/rpcclient'):
+            raise nose.SkipTest("Package samba-client not available "
+                                "on {}".format(cls.master.hostname))
         super(ADTrustBase, cls).install(mh)
         cls.ad = cls.ad_domains[0].ads[0]
         cls.ad_domain = cls.ad.domain.name