Fix pinning of mk repositories

Change-Id: I5b9c0af413f0e9b96662e2168e01519c27fa14fd
diff --git a/linux/system/repo/mcp/openstack.yml b/linux/system/repo/mcp/openstack.yml
index d829c94..5e6a420 100644
--- a/linux/system/repo/mcp/openstack.yml
+++ b/linux/system/repo/mcp/openstack.yml
@@ -1,7 +1,7 @@
 parameters:
   _param:
     mcp_repo_version: 1.0
-    apt_mk_version: stable 
+    apt_mk_version: stable
   linux:
     system:
       repo:
@@ -52,4 +52,4 @@
           pin:
           - pin: 'release a=${_param:apt_mk_version}'
             priority: 1100
-            package: '*'
\ No newline at end of file
+            package: '*'