Writes join-domain and name-computer grains with salt linux worker
Writes join-domain and name-computer grains with salt linux worker

*   Adds the join-domain grain to the salt linux worker. This
    enables support for the `oupath`, `adminusers`, and
    `admingroups` settings.
*   Adds the name-computer grain to the salt linux worker. This
    enables support for the `computername` configuration setting.
*   Modifies the approach to writing the join-domain grain for both
    linux and windows salt workers so that the resulting values
    will be interpreted correctly

plus3it/watchmaker,plus3it/watchmaker