Fix broken email mapping and add missing domains

Fix the broken email mapping for
filebat.mark@gmail.com <-> denny@unitedstack.com.  The way that it was
mapped before was causing errors during analysis.

Add domain mappings for 99cloud, Big Switch, and VMware

--per sdague: remove the extra trailing space from line 33

Change-Id: I38bc129f56b5862abb904bace309bf8a498be352