Added oraclejdk8 to .travis.yml.
Added oraclejdk8 to .travis.yml.

scalatest/scalatest,scalatest/scalatest,janekdb/scalatest,janekdb/scalatest,rfries/scalatest,SRGOM/scalatest,gcberger/scalatest,rahulkavale/scalatest,SRGOM/scalatest,rahulkavale/scalatest,rahulkavale/scalatest,cheeseng/scalatest,triggerNZ/scalatest,scalatest/scalatest,janekdb/scalatest,rfries/scalatest,dotty-staging/scalatest,rahulkavale/scalatest,cheeseng/scalatest,triggerNZ/scalatest,gcberger/scalatest,flicken/scalatest,gcberger/scalatest,SRGOM/scalatest,flicken/scalatest,SRGOM/scalatest,dotty-staging/scalatest,gcberger/scalatest,triggerNZ/scalatest,cheeseng/scalatest,flicken/scalatest,rfries/scalatest,triggerNZ/scalatest,matterche/scalatest,janekdb/scalatest,matterche/scalatest,rfries/scalatest,matterche/scalatest,flicken/scalatest,matterche/scalatest,dotty-staging/scalatest