Adding a separate proxy service for policy 11.

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180444 a5903396-d722-0410-b921-86c7d4935375
Applying code review comments for APIMANAGER-1415

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180445 a5903396-d722-0410-b921-86c7d4935375