Use appropriate option type for bash completion

5 jobs for v1.5.6 in 16 minutes and 41 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Build Testinstall
passed #274226
dailyBuildMasterAll

00:03:03

 
  Doc Coverage
passed #274228
Doc

00:05:31

passed #274227
TestCoverage

00:05:41

 
  Deploy
passed #274230
pages

00:02:25

passed pages:deploy

00:02:27