Remove invalid error messages from topology upgrade

Return False does not mean that update failed, it mean that nothing has
been updated, respectively ldap is up to date.

https://fedorahosted.org/freeipa/ticket/5482

Reviewed-By: Tomas Babej <tbabej@redhat.com>

ipaserver/install/cainstance.py

@@ -595,9 +595,7 @@ class CAInstance(DogtagInstance):
             'SUFFIX': api.env.basedn,
             'FQDN': self.fqdn,
         })
-        rv = ld.update([paths.CA_TOPOLOGY_ULDIF])
-        if not rv:
-            raise RuntimeError("Failed to update CA topology configuration")
+        ld.update([paths.CA_TOPOLOGY_ULDIF])
 
     def __disable_nonce(self):
         # Turn off Nonces

ipaserver/install/plugins/update_ca_topology.py

@@ -25,9 +25,8 @@ class update_ca_topology(Updater):
             'SUFFIX': self.api.env.basedn,
             'FQDN': self.api.env.host,
         })
-        rv = ld.update([paths.CA_TOPOLOGY_ULDIF])
-        if not rv:
-            self.log.error("Failed to update CA topology configuration")
+
+        ld.update([paths.CA_TOPOLOGY_ULDIF])
 
         return False, []