commanding dome lamps sometimes fails

[astronomerdave]

Two problems:

1. commanding the TCS dome lamps and consequently asking for their state would sometimes return "not available" and this error would cause the sequencer to skip that target. JB says that the lamp mechanism takes some time to respond and that he only monitors the command once per second, so we need to wait 1s after sending NPS before sending LAMPS?.
2. The sequencer is setting lamps for each target. He should know better than this and set them only when needed. The lamp state is already part of the tcs info telemetry so he should not be turning off lamps if he already knows them to be off.

This is the cause for the robot having skipped so many targets last night.

[astronomerdave]

resolved by PR #469