Re-add build message pointing to code coverage report.
Re-add build message pointing to code coverage report.

Reviewed at https://reviews.apache.org/r/26787/

wfarner/aurora,medallia/aurora,rdelval/aurora,medallia/aurora,rosmo/aurora,mschenck/aurora,mschenck/aurora,apache/aurora,medallia/aurora,rosmo/aurora,rdelval/aurora,medallia/aurora,shahankhatch/aurora,rosmo/aurora,shahankhatch/aurora,mschenck/aurora,thinker0/aurora,crashlytics/aurora,apache/aurora,thinker0/aurora,kidaa/aurora,crashlytics/aurora,wfarner/aurora,shahankhatch/aurora,mschenck/aurora,wfarner/aurora,protochron/aurora,rosmo/aurora,wfarner/aurora,thinker0/aurora,rosmo/aurora,kidaa/aurora,protochron/aurora,crashlytics/aurora,thinker0/aurora,rosmo/aurora,protochron/aurora,kidaa/aurora,medallia/aurora,rdelval/aurora,kidaa/aurora,protochron/aurora,mschenck/aurora,rdelval/aurora,kidaa/aurora,thinker0/aurora,apache/aurora,mschenck/aurora,crashlytics/aurora,thinker0/aurora,wfarner/aurora,apache/aurora,rdelval/aurora,rdelval/aurora,crashlytics/aurora,kidaa/aurora,protochron/aurora,protochron/aurora,apache/aurora,shahankhatch/aurora,wfarner/aurora,medallia/aurora,crashlytics/aurora,apache/aurora,shahankhatch/aurora,shahankhatch/aurora