Add support for new fields in network create

Also adds missing network-delete shell command. Additionally changes
the type of vlan and vlan_start to int to match the api samples.

Partially-implements blueprint better-support-for-multiple-networks

Change-Id: I233614431db4737284cceaf8e6b947f50dd84602
Enable H233

H233 (and H402) were temporarily disabled as part of the migration to
hacking 0.9. This patch fixes all H233 issues and re-enables
gating on them.

H402 has been removed in hacking
(I9426644fa708e9d5563abe04dc4ad656dbeb3656) so leave this one off as its
going away anyway.

Change-Id: Iae8f132c66c5e345dc2e9c2464f67609887c1475
Merge "Add support for new fields in network create"