Force update the pkgin database

Signed-off-by: Jacques Marneweck <jacques@powertrip.co.za>
Ensure that the /opt/custom/smf directory exists

Signed-off-by: Jacques Marneweck <jacques@powertrip.co.za>
Ensure we pass in the custom solo.rb

Signed-off-by: Jacques Marneweck <jacques@powertrip.co.za>
Populate the datacenter name to /.dcinfo so SDC_DATACENTER_NAME is populated and shows the datacenter name in the bash prompt

Signed-off-by: Jacques Marneweck <jacques@powertrip.co.za>