Include hosts in aggregate list --long

This makes it easier to get the total list of aggregates and the hosts
belonging to each of them (specially for scripting purposes).

Change-Id: I94833c15075ae655bc11e7c0fc47c0abad5846fc
Signed-off-by: David Caro <me@dcaro.es>

openstackclient/compute/v2/aggregate.py

@@ -193,12 +193,14 @@ class ListAggregate(command.Lister):
                 "Name",
                 "Availability Zone",
                 "Properties",
+                "Hosts",
             )
             columns = (
                 "ID",
                 "Name",
                 "Availability Zone",
                 "Metadata",
+                "Hosts",
             )
         else:
             column_headers = columns = (

openstackclient/tests/unit/compute/v2/test_aggregate.py

@@ -234,6 +234,7 @@ class TestAggregateList(TestAggregate):
         "Name",
         "Availability Zone",
         "Properties",
+        "Hosts",
     )
 
     list_data = ((
@@ -251,6 +252,7 @@ class TestAggregateList(TestAggregate):
             for key, value in TestAggregate.fake_ag.metadata.items()
             if key != 'availability_zone'
         }),
+        format_columns.ListColumn(TestAggregate.fake_ag.hosts),
     ), )
 
     def setUp(self):