Adding waf_profile uuid and waf_protection True/False configuration
to the nsx_p section.
The policy plugin will load and erify the profile UUID.
Uplon L& LB listener creation, the WAF profile will be attached with the
requested mode (PROTECTION/DETECTION).
Unit tests will be added on top of the LB unit tests.
Change-Id: If68486d6d08efde865c880e0c0cee2fb0af66baf