Test multiple valid URL without login

Changes:
    - GET base default removed
    - Update test to use template.
    - Check following '/', /redfish, `/redfish/v1 URL without
      logged in.

This enable to test request for valid and invalid resource URL.

Change-Id: Ieaf0a6c6d9982078d39c4607d0e41cf2843ab4a9
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/bmc_redfish.py b/lib/bmc_redfish.py
index ae31d40..178a207 100644
--- a/lib/bmc_redfish.py
+++ b/lib/bmc_redfish.py
@@ -68,12 +68,11 @@
         Perform a GET request and return response.
 
         Description of argument(s):
-        resource_path    URI resource relative path (e.g. "Systems/1").
+        resource_path    URI resource absolute path (e.g. "/redfish/v1/Systems/1").
         args/kwargs      These are passed directly to the corresponding
                          RestClientBase method.
         """
-        self._rest_response_ = self._robj_.get('/redfish/v1/' + resource_path,
-                                               *args, **kwargs)
+        self._rest_response_ = self._robj_.get(resource_path, *args, **kwargs)
         return self._rest_response_
 
     def post(self, resource_path, *args, **kwargs):