Turn off strict host key checking for all hosts in vagrant.
Turn off strict host key checking for all hosts in vagrant.

Bugs closed: AURORA-1406

Reviewed at https://reviews.apache.org/r/36745/

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