Enable SSH BatchMode
Override BatchMode in ghe-host-check
Turn ssh opts into array. Helps with quoted args
Replace accidentallied redirection
Merge remote-tracking branch 'walkeran/batchmode'
Use -o Opt=val syntax instead of -o 'Opt val'

This just lets us not deal with quoted values here just yet.
Flip back to non-bash-array option building for now

I'd like to bring this back at some point because it does make
things a lot more complete but I want to get some guidelines for
using bash features in place before switching shebangs.