(MAINT) broken spec fixes (docker + copy_module_to)

- docker spec was still allowing sleeps to execute making things run
  slow
- update copy_module_to spec test to use correct ignore list
Merge pull request #451 from anodelman/maint

(MAINT) broken spec fixes (docker + copy_module_to)
(QENG-1128) Beaker no long auto recursively scps directories...

to systems under test

- issue was :recursive variable was being carried over successive calls
  to scp_to.  To prevent this, just set it based upon the file type
  being called