Corrected error in parse_key_value in var_funcs.py.
Corrected error in parse_key_value in var_funcs.py.

Need to use caller's delim when re-joining fields 1 to n.

Change-Id: I248e52efd393088101875ce41b1496c07504afb1
Signed-off-by: MICHAEL J. WALSH <10404802c7de463f402c4a18638106ca1b12ef61@us.ibm.com>

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