Tweak the pipeline-server instructions
Tweak the pipeline-server instructions

Fix typo in commands to disable lava-master on V1 workers
Drop example output which does not always match actual output.

Change-Id: I6d3496f2fab89ad0b142d2d8bc2ebbab62e76e5c

Linaro/lava-server,Linaro/lava-server,Linaro/lava-server,Linaro/lava-server