Updated groovy bootstrap to set CUSTOM_TAGS property for processor and
reader config sections.  This was preventing the reader from ever going
into resource group UI mode for reading detailed billing files with tags
and resources.
Updated code based on some review by james.
Merge pull request #1 from mdsol/feature/add-fix-for-custom-tags-property-in-bootstrap

Updated groovy bootstrap to set CUSTOM_TAGS property for processor and