caoyuan e5edf98266 Add the ironic_dnsmasq_dhcp_range prechecks for Ironic Dnsmasq
When deploy ironic, the ironic_dnsmasq keep restaring if
ironic_dnsmasq_dhcp_range is missing, so it necessary to add a
prechecks to ensure it be set.

Change-Id: I0c1d91f62f4e5dad2d9a45a2a7bb51b5121dbfda
2018-01-30 21:39:18 +08:00
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