Add Knock off and on gesture control

Change-Id: Ia5ab10b5e4a062918e1b8bfdf99cd19bfbfa63cf
camera: Make sure we never claim to have multiple snaps if ZSL is disabled

This is mostly a userspace app bug, but still an incorrect behavior on
the HAL's part. In non-ZSL burst modes, the number of snaps should always
be 1
Remove unused config options
Enable smartcover sleep/wake
time_daemon: Create the service's atom storage dirs