cvlib: Remove runDeviceCommands reliance on deprecated fields

Ctx.changecontrol is a deprecated field and should not be relied
upon for checking if the function is callable. Action (its replacement)
should be used instead.

Furthermore, studio autofill actions are not change controls, but may
require to run device commands to fetch such information as the
hostname.
Allow commands to be run in such contexts

Change-Id: I0dc93e50056c81f22fd2407dfd59f8eacb1fa005

cloudvision/cvlib/context.py

@@ -46,7 +46,7 @@ class Context:
     - user:           Info on the user executing this script
     - device:         Info on the device the script is operating on, if applicable
     - action:         Info on the action associated with the current context, if applicable
-    - changeControl:  Common change-control script parameters
+    - changeControl:  Common change-control script parameters (Deprecated, use action)
     - studio:         Common studio parameters
     - execution:      Info on the standalone execution context
     - connections:    Object storing connection info used by the context, e.g. apiserver address
@@ -230,9 +230,9 @@ def runDeviceCmds(self, commandsList: List[str], device: Optional[Device] = None
                  DeviceCommandsFailed if validating command responses and the contents
                  contain an error code/message (can occur if request is a 200)
         '''
-        if not self or not self.changeControl:
+        if not self or not self.action:
             raise InvalidContextException(
-                "runDeviceCmds is only available during change controls")
+                "runDeviceCmds is only available in action contexts")
 
         if device is None:
             if self.device is None: