Update http framework servlet integration

git-svn-id: https://svn.forgerock.org/openig/branches/http-framework@608 dbb9e58e-28e6-4ce0-90e8-f11d9605b710
Migrate openig-war to use http-servlet

git-svn-id: https://svn.forgerock.org/openig/branches/http-framework@609 dbb9e58e-28e6-4ce0-90e8-f11d9605b710
Add logging to GatewayServletConfiguration

git-svn-id: https://svn.forgerock.org/openig/branches/http-framework@610 dbb9e58e-28e6-4ce0-90e8-f11d9605b710