Tests. Add pip --upgrade flag for Travis-CI
Tests. Add pip --upgrade flag for Travis-CI

GitHubFriction/pywinrm,max-orlov/pywinrm,cchurch/pywinrm,luisfdez/pywinrm,luisfdez/pywinrm,diyan/pywinrm,max-orlov/pywinrm,cchurch/pywinrm,luisfdez/pywinrm,cchurch/pywinrm,max-orlov/pywinrm,GitHubFriction/pywinrm,GitHubFriction/pywinrm,cloudbase/pywinrm,cloudbase/pywinrm