Patch adds a check to make sure that the user specified static_ip_range
argument (Ex. 192.168.0.10,192.168.0.20) falls within the valid public
subnet of the host (the same subnet as the default gateway).
JIRA: APEX-19
Change-Id: Ifc0b79074b887509617c2749e50d97d1800abad0 Signed-off-by: Tim Rozet <trozet@redhat.com>