update to kriging
Merge branch 'dev' of https://github.com/OpenMDAO/OpenMDAO-Framework into dev
fixed tests and tightened up covergence tollerance
fixed a couple of test failures caused by expecting ListCaseIterator to be inherited from list
Merge pull request #1699 from naylor-b/cwmine

small update to a pull request from @cwmine that updated ListCaseIterator so that ...
remove print
Merge pull request #1698 from JustinSGray/dev

Updated training method for Kriging
add random seed setting function to get repeatable result
Merge remote-tracking branch 'origin/dev' into dev