Add support for parsing config file to Options

This will allow the `Options` helper class to pass along the user's
intended configuration file.

Change-Id: Ifccdeb5488a1b0753afc97471f74d6a69793bbdc
Reviewed-on: http://gerrit.causes.com/40425
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>
Tested-by: Shane da Silva <shane.dasilva@brigade.com>
Get configuration loading working

Some final tweaks and fixes were needed in order to get configuration
loading working.

Change-Id: Id3d9bd717a40eac8c6b25b4422099be2680d54d9
Reviewed-on: http://gerrit.causes.com/40426
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>