Disable horizon, ceilomter and swift in gate hook

If the services are disabled in the devstack/settings file, it disables
them for everyone who uses the magnum devstack plugin. Some people (like
shade) use both magnum and swift to test things. Putting this in the
gate hook means it's used in all of magnum's jobs, but not in other
people's jobs.

Change-Id: Icd82a4ab68533f39f967575c2125b0f61c70e0a6

devstack/settings

@@ -27,24 +27,6 @@ enable_service q-l3
 enable_service q-meta
 enable_service neutron
 
-# Disable horizon
-disable_service horizon
-
-# Disable swift
-disable_service s-account
-disable_service s-container
-disable_service s-object
-disable_service s-proxy
-
-# Disable ceilometer
-disable_service ceilometer-acentral
-disable_service ceilometer-acompute
-disable_service ceilometer-alarm-evaluator
-disable_service ceilometer-alarm-notifier
-disable_service ceilometer-anotification
-disable_service ceilometer-api
-disable_service ceilometer-collector
-
 # Enable Magnum services
 enable_service magnum-api
 enable_service magnum-cond

magnum/tests/contrib/gate_hook.sh

@@ -21,6 +21,18 @@ special=$2
 export PROJECTS="openstack/barbican $PROJECTS"
 export DEVSTACK_LOCAL_CONFIG="enable_plugin heat git://git.openstack.org/openstack/heat"
 
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service horizon"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-account"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-container"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-object"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-proxy"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service ceilometer-acentral"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service ceilometer-acompute"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service ceilometer-alarm-evaluator"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service ceilometer-alarm-notifier"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service ceilometer-api"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service ceilometer-collector"
+
 if [ "$coe" = "mesos" ]; then
     echo "MAGNUM_GUEST_IMAGE_URL=https://fedorapeople.org/groups/magnum/ubuntu-mesos-latest.qcow2" >> $BASE/new/devstack/localrc
 elif [ "$coe" = "k8s-coreos" ]; then