Bug 2271399

.The authentication of the forwarded request on the primary site no longer fails Previously, an S3 request issued to secondary failed if temporary credentials returned by STS were used to sign the request. The failure occured because the request would be forwarded to the primary and signed using a system user's credentials which do not match the temporary credentials in the session token of the forwarded request. As a result of unmatched credentials, the authentication of the forwarded request on the primary site fails, which results in the failure of the S3 operation. With this fix, the authentication is by-passed by using temporary credentials in the session token in case a request is forwarded from secondary to primary. The system user's credentials are used to complete the authentication successfully.