Make IntegrationTest fail if an error happened during uninstall

Before this change, if the uninstall process fails, the test would not fail, due
to the raiseonerr=False.

It's necessary to remove the uninstall call in CALessBase because in
TestIntegration there is another uninstall call. So, without the
raiseonerr=False, it would make the uninstall process fail, since the master is
already uninstalled.

https://pagure.io/freeipa/issue/7357

Reviewed-By: Christian Heimes <cheimes@redhat.com>

ipatests/pytest_plugins/integration/tasks.py

@@ -711,7 +711,7 @@ def uninstall_master(host, ignore_topology_disconnect=True,
     if ignore_last_of_role and host_domain_level != DOMAIN_LEVEL_0:
         uninstall_cmd.append('--ignore-last-of-role')
 
-    host.run_command(uninstall_cmd, raiseonerr=False)
+    host.run_command(uninstall_cmd)
     host.run_command(['pkidestroy', '-s', 'CA', '-i', 'pki-tomcat'],
                      raiseonerr=False)
     host.run_command(['rm', '-rf',

ipatests/test_integration/test_caless.py

@@ -162,8 +162,6 @@ class CALessBase(IntegrationTest):
     def uninstall(cls, mh):
         # Remove the NSS database
         shutil.rmtree(cls.cert_dir)
-        for host in cls.get_all_hosts():
-            tasks.uninstall_master(host)
         super(CALessBase, cls).uninstall(mh)
 
     @classmethod