Start up glance-powervc driver in Juno Release

In Juno Release , there are four files in the Glance Component deleted
 in the directory "glance/openstack/common" , based on
https://github.com/openstack/glance/commit/c3ff558fc0b8eab6117901a746f97a2800d7d02f,
 but glance-powervc driver need the ServiceLauncher to launch the driver service ,so
 it starts failed.

The solution is to change to user nova ServiceLauncher to launch the
 service by modifing import path in the file bin/glance-powervc and
 manager/manager.py

Change-Id: I2f6ec46fbb098043ad9721155b0c640fbde25df0
Closes-Bug: #1337186

glance-powervc/bin/glance-powervc

@@ -24,13 +24,13 @@ if os.path.exists(os.path.join(POSSIBLE_TOPDIR, 'powervc', '__init__.py')):
 
 # TODO RYKAL
 # This should go in the base __init__ folder I think
-from glance.openstack.common import gettextutils
+from nova.openstack.common import gettextutils
 gettextutils.install('glance')
 
 from powervc.glance.common import config
-from glance.openstack.common import log
-from glance.openstack.common import service
-from glance.openstack.common import importutils
+from nova.openstack.common import log
+from nova.openstack.common import service
+from nova.openstack.common import importutils
 
 CONF = config.CONF
 

glance-powervc/powervc/glance/common/config.py

@@ -29,8 +29,15 @@ image_opts = [
 
 CONF.register_opts(image_opts, group='powervc')
 
-# Import glance opts
-CONF.import_opt('owner_is_tenant', 'glance.api.middleware.context')
+"""
+Refer to the file glance/api/middleware/context.py , register the config
+option named 'owner_is_tenant' to default group.
+"""
+CONF.register_opt(cfg.BoolOpt('owner_is_tenant', default=True,
+                              help=_('When true, this option sets the owner of '
+                                     'an image to be the tenant. Otherwise, the'
+                                     ' owner of the image will be the '
+                                     'authenticated user issuing the request.')))
 
 
 def parse_config(*args, **kwargs):

glance-powervc/powervc/glance/manager/manager.py

@@ -13,9 +13,9 @@ import itertools
 from operator import itemgetter
 import HTMLParser
 
-from glance.openstack.common import service
-from glance.openstack.common import log as logging
-from glance.openstack.common import timeutils
+from nova.openstack.common import service
+from nova.openstack.common import log as logging
+from nova.openstack.common import timeutils
 from glanceclient.v1 import images as v1images
 from glanceclient.exc import CommunicationError
 from glanceclient.exc import HTTPNotFound