Previous patch fixed the form but did not fix yet
another bug in the original implementation of the
patching of the create instance workflow. Namely,
the patched logic was always assuming the need for
a PTG, and would override the supplied network
arguments. This is being fixed here.
Also caps the cmd2 dependency whose latest version is
incompatible.
Change-Id: If0fff67cd2b811853a632055d1609b6057769bb8
9ddc2346a0