Add the LANG exported variable

Explicitly set the LANG variable to UTF-8 which is needed to get the
profanity application to work correctly.

Signed-off-by: Prakash Surya <prakash.surya@delphix.com>
Add SSH configuration for dcenter VMs

This adds a section to the SSH configuration file for use when
connecting to dcenter VMs.

Signed-off-by: Prakash Surya <prakash.surya@delphix.com>