Changing the python module name

Changing from completion to ligo_channels.
Also changed the function names from complete to completion.
3 jobs for master in 11 minutes and 5 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build And Test
passed ligo-channel-completion:buster #246968

00:01:13

passed ligo-channel-completion:jessie #246970

00:11:05

passed ligo-channel-completion:stretch #246969

00:01:07