Give shell the CHANGE_DEVICE_IDLE_TEMP_WHITELIST permission

Shell needs to have this permission in order for the deviceidle
tempwhitelist shell command to exist.

Bug 34715096
Test: cts-tradefed run cts -m CtsAppTestCases \
  -t android.app.cts.ActivityManagerTest#testBackgroundCheckService

Change-Id: Ic1fdd87b6020649705ba0c9349dd00dd096037f3