Timeout if seed fails to get IP address
Timeout if seed fails to get IP address

Prevent boot-seed-vm from getting stuck in a loop if the seed VM fails
to get an IP, this was causing CI to run indefinitely.

Change-Id: Ib3f44e538186af8e090e1065b4b708b6ce95442e

rdo-management/tripleo,rdo-management/tripleo