Allow optional OpenStack API connection parms
Changed compute from an instant variabl to a 'let'
Added a spec for changes in the director.yml.erb.erb
Changed double quotes to single

Signed-off-by: Matthew Boedicker <mboedicker@pivotallabs.com>
Added check for ssh known hosts file[fixes #61155830]

Signed-off-by: Matthew Boedicker <mboedicker@pivotallabs.com>
Shut up rubocop

Signed-off-by: Jesse Zhang <jz@pivotallabs.com>