Modify state-management properties

Modify state-management properties

Patch 1:
Removed hostPort and added server.TEST properties from
feature-state-management.properties and modified associated
code in IntegrityMonitor and properties in associated JUnit tests.
Patch 2:
Modified in response to comments from Jorge Hernandez.  Including
adding contant usage instead of strings and replacing generic exceptions
with specific exceptions.
Patch 3:
Tied property constants to PolicyProperties. Added default property
contants.  Added error/warning log statemeents when something other
than expected value is used.  Add logging of all constant values
for inspection in debugging.

Issue-ID: POLICY-369
Change-Id: Ie2218b68761e0338642a2ed28ef840b1b6ece1a4
Signed-off-by: Kevin McKiou <km097d@att.com>