Request::States: Add info to parse error message
Request::States: Add info to parse error message

The error message includes information on where in the config the error
occurred, as well as what kind of error occurred.

Tiger66639/travis-core,final-ci/travis-core,GistIcon/travis-core,final-ci/travis-core,travis-ci/travis-core,jantman/travis-core,jantman/travis-core,developerfm/travis-core,kidaa/travis-core,GistIcon/travis-core,final-ci/travis-core,developerfm/travis-core,developerfm/travis-core,kidaa/travis-core,Tiger66639/travis-core,kidaa/travis-core,travis-ci/travis-core,travis-ci/travis-core,GistIcon/travis-core,Tiger66639/travis-core