check for existing environments. only allow a re-init if it is the same environment.
check for existing environments. only allow a re-init if it is the same environment.

devkev/mtools,gormanb/mtools,corymintz/mtools,ces0712/mtools,parkhyeonghwa/mtools,yaowenqiang/mtools,tomzhang/mtools,rueckstiess/mtools,rueckstiess/mtools,aerrami/mtools,ces0712/mtools,aerrami/mtools,aerrami/mtools,devkev/mtools,yaowenqiang/mtools,tomzhang/mtools,tomzhang/mtools,gormanb/mtools,yaowenqiang/mtools,corymintz/mtools,devkev/mtools,ces0712/mtools,corymintz/mtools,parkhyeonghwa/mtools,parkhyeonghwa/mtools,gormanb/mtools