Enable n-novnc service

The service n-novnc is not enabled by default.  This will enable it,
allowing tests associated with NoVNC to be executed. This also
specifies to install noVNC from packages instead of git cloning it
for gate jobs.

Change-Id: I09aed8de28f1ba2637382e870134ced38808df29

devstack-vm-gate.sh

@@ -335,6 +335,8 @@ ROOTSLEEP=0
 # to correctly do testing. Otherwise you are not testing
 # the code you have posted for review.
 ERROR_ON_CLONE=True
+# Since git clone can't be used for novnc in gates, force it to install the packages
+NOVNC_FROM_PACKAGE=True
 ENABLED_SERVICES=$MY_ENABLED_SERVICES
 SKIP_EXERCISES=$SKIP_EXERCISES
 SERVICE_HOST=127.0.0.1

features.yaml

@@ -80,7 +80,7 @@ features:
 
   nova:
     base:
-      services: [n-api, n-cond, n-cpu, n-crt, n-net, n-obj, n-sch]
+      services: [n-api, n-cauth, n-cond, n-cpu, n-crt, n-net, n-novnc, n-obj, n-sch]
     icehouse:
       compute-ext:
 

test-features.sh

@@ -16,13 +16,13 @@
 
 ERRORS=0
 
-TEMPEST_FULL_MASTER="n-api,n-crt,n-obj,n-cpu,n-sch,n-cond,g-api,g-reg,key,horizon,c-api,c-vol,c-sch,c-bak,cinder,s-proxy,s-account,s-container,s-object,mysql,rabbit,dstat,tempest,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api,ceilometer-alarm-notifier,ceilometer-alarm-evaluator,ceilometer-anotification,n-net"
+TEMPEST_FULL_MASTER="n-api,n-crt,n-obj,n-cpu,n-sch,n-cond,n-novnc,n-cauth,g-api,g-reg,key,horizon,c-api,c-vol,c-sch,c-bak,cinder,s-proxy,s-account,s-container,s-object,mysql,rabbit,dstat,tempest,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api,ceilometer-alarm-notifier,ceilometer-alarm-evaluator,ceilometer-anotification,n-net"
 
-TEMPEST_NEUTRON_MASTER="n-api,n-crt,n-obj,n-cpu,n-sch,n-cond,g-api,g-reg,key,horizon,c-api,c-vol,c-sch,c-bak,cinder,s-proxy,s-account,s-container,s-object,mysql,rabbit,dstat,tempest,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api,ceilometer-alarm-notifier,ceilometer-alarm-evaluator,ceilometer-anotification,quantum,q-svc,q-agt,q-dhcp,q-l3,q-meta,q-metering"
+TEMPEST_NEUTRON_MASTER="n-api,n-crt,n-obj,n-cpu,n-sch,n-cond,n-novnc,n-cauth,g-api,g-reg,key,horizon,c-api,c-vol,c-sch,c-bak,cinder,s-proxy,s-account,s-container,s-object,mysql,rabbit,dstat,tempest,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api,ceilometer-alarm-notifier,ceilometer-alarm-evaluator,ceilometer-anotification,quantum,q-svc,q-agt,q-dhcp,q-l3,q-meta,q-metering"
 
-TEMPEST_HEAT_SLOW_MASTER="n-api,n-crt,n-obj,n-cpu,n-sch,n-cond,g-api,g-reg,key,horizon,c-api,c-vol,c-sch,c-bak,cinder,s-proxy,s-account,s-container,s-object,mysql,rabbit,dstat,tempest,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api,ceilometer-alarm-notifier,ceilometer-alarm-evaluator,ceilometer-anotification,quantum,q-svc,q-agt,q-dhcp,q-l3,q-meta,q-metering"
+TEMPEST_HEAT_SLOW_MASTER="n-api,n-crt,n-obj,n-cpu,n-sch,n-cond,n-novnc,n-cauth,g-api,g-reg,key,horizon,c-api,c-vol,c-sch,c-bak,cinder,s-proxy,s-account,s-container,s-object,mysql,rabbit,dstat,tempest,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api,ceilometer-alarm-notifier,ceilometer-alarm-evaluator,ceilometer-anotification,quantum,q-svc,q-agt,q-dhcp,q-l3,q-meta,q-metering"
 
-GRENADE_NEW_MASTER="n-api,n-crt,n-obj,n-cpu,n-sch,n-cond,g-api,g-reg,key,c-api,c-vol,c-sch,c-bak,cinder,s-proxy,s-account,s-container,s-object,mysql,rabbit,dstat,tempest,n-net,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api,ceilometer-alarm-notifier,ceilometer-alarm-evaluator,ceilometer-anotification"
+GRENADE_NEW_MASTER="n-api,n-crt,n-obj,n-cpu,n-sch,n-cond,n-novnc,n-cauth,g-api,g-reg,key,c-api,c-vol,c-sch,c-bak,cinder,s-proxy,s-account,s-container,s-object,mysql,rabbit,dstat,tempest,n-net,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api,ceilometer-alarm-notifier,ceilometer-alarm-evaluator,ceilometer-anotification"
 
 # Utility function for tests
 function assert_list_equal {