[PATCH] Fix issue reported by Michal Fojtik using Openstack through CIMI - list images giving error

[marios]

From: marios <mar...@redhat.com>

Make opts={} rather than opts=nil to prevent undefined method `[]' for 
nil:NilClass

Signed-off-by: marios <mar...@redhat.com>
---
 .../drivers/openstack/openstack_driver.rb          |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/server/lib/deltacloud/drivers/openstack/openstack_driver.rb 
b/server/lib/deltacloud/drivers/openstack/openstack_driver.rb
index 5e49392..845ddee 100644
--- a/server/lib/deltacloud/drivers/openstack/openstack_driver.rb
+++ b/server/lib/deltacloud/drivers/openstack/openstack_driver.rb
@@ -55,7 +55,7 @@ module Deltacloud
           end
         end
 
-        def images(credentials, opts=nil)
+        def images(credentials, opts={})
           os = new_client(credentials)
           results = []
           profiles = hardware_profiles(credentials)
@@ -95,7 +95,7 @@ module Deltacloud
           end
         end
 
-        def realms(credentials, opts=nil)
+        def realms(credentials, opts={})
           os = new_client(credentials)
           limits = ""
           safely do
-- 
1.7.6.5