Support ADB command for denying client auth

To make it easier to verify the permissions authentication logic, add
support for immediately denying a client access to a nanoapp.

Bug: 166846988
Test: adb shell cmd contexthub disable 0 test 0x123412 and verify
the app no longer can talk to the nanoapp

Change-Id: I45e15325e8cd3cc4b216f80292b507cbc675cd10