Test for CreateForwardingRule using WS.
Merge pull request #860 from adrian-rosello/itest/openflowswitch

Test for CreateForwardingRule using WS.

A refactor in HTTPServerServlet was required. The attributes of the incoming request are now stored at the beginning of the workflow, since it's more efficient this way.

The test goal is to check the WS of the OpenFlowForwardingCapability.
http://jira.i2cat.net/browse/OPENNAAS-1162
First NCLProvisionerTest finished.
Merge branch 'develop' of https://github.com/dana-i2cat/opennaas into fix/itests-for-ncl
Itest with mock server fixed and null-safety parser.