Set Nomad Exec TERM and other relevant environment variables

[notnoop]

When using nomad exec, it is useful for the CLI to pass local TERM/LANG and other variables to remote sessions, so debugger can seamless use sophisticated text-based uis (e.g. tmux/screen/vim) effectively.

Having API accept TERM and other environment variables ease web terminal development, so we can set an appropriate TERM value for the javascript implementation automatically without user intervention.

[stale]

Hey there

Since this issue hasn't had any activity in a while - we're going to automatically close it in 30 days. If you're still seeing this issue with the latest version of Nomad, please respond here and we'll keep this open and take another look at this.

Thanks!