New gen_misc makedirs/chdir functions
New gen_misc makedirs/chdir functions

Change-Id: Ib62a2e87d48ddaed58a9ddfe6618bab6d193234f
Signed-off-by: Michael Walsh <10404802c7de463f402c4a18638106ca1b12ef61@us.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation