REST message JSON format compliance test
REST message JSON format compliance test

Added REST operation:
   - GET
   - POST
   - PUT

Resolves openbmc/openbmc-test-automation#763

Change-Id: I5959fd73af9d40c36ea568bfb677c34c4ea56a7a
Signed-off-by: George Keishing <bef0a9ecac45fb57611777c8270153994e13fd2e@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation