Make 'descID' dict entry optional in OvfFile.addNetwork input
Make 'descID' dict entry optional in OvfFile.addNetwork input

descID is being used to indicate the messageID for a network entry.  As it
is not required addNetwork will now only use it if it is set in the
dictionary.

Signed-off-by: Marcos Cintron <d68a97f9cedacc5e727c3ff243ef4cc60a101b2f@us.ibm.com>
modified style and commit message
Signed-off-by: Scott Moser <f411aed5b71f5ab75e7f202cdde1f0f4410975aa@linux.vnet.ibm.com>

Awingu/open-ovf,Awingu/open-ovf,Awingu/open-ovf,Awingu/open-ovf