joyent driver does not have a start method.
I renamed start_node method to ex_start_node because this method is an extension method and committed you patch into trunk - thanks!
Commit 1470329 from Tomaz Muraus
[ https://svn.apache.org/r1470329 ]
Add ex_start_node method to the Joyent driver.
Contributed by rszabo50, part of LIBCLOUD-319.
patch to joyent.py driver file and test_joyent.py testcase file
tests validated, and real joyent connection validated