Refactor apimgt feature structure.

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@177284 a5903396-d722-0410-b921-86c7d4935375
update apimgt features.

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@177285 a5903396-d722-0410-b921-86c7d4935375
fixing build failure

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@177288 a5903396-d722-0410-b921-86c7d4935375