Adding WSO2OperationsCenterAuthenticator initial implementation.

Signed-off-by: Jayanga Dissanayake <jsdjayanga@yahoo.com>
Modifying to validate HttpServletRequest headers and attributes.

Signed-off-by: Jayanga Dissanayake <jsdjayanga@yahoo.com>
Adding operations-center-only header in the post messages

Signed-off-by: Jayanga Dissanayake <jsdjayanga@yahoo.com>
Merge pull request #5 from jsdjayanga/M2-secure-oc-and-oca-communication

Merging M2-secure-oc-and-oca-communication