host: Allocate IP addresses on job restore.
host: Allocate IP addresses on job restore.

IPs from running containers should be marked as used. Log any errors in doing
so.

Note that for this functionality to work correctly, --force should not be set on
flynn-host, as that will run Cleanup() before starting it, destroying all of the
old containers.

Signed-off-by: Blaž Hrastnik <e26a9cc74a1e4715764aa09d1071b1ef182b1807@gmail.com>

whouses/flynn,shads196770/flynn,jzila/flynn,supermario/flynn,benbjohnson/flynn,jzila/flynn,whouses/flynn,Brandywine2161/flynn,josephglanville/flynn,lmars/flynn,jzila/flynn,ozum/flynn,TribeMedia/flynn,TribeMedia/flynn,lmars/flynn,pkdevbox/flynn,Brandywine2161/flynn,justintung/flynn,jzila/flynn,shads196770/flynn,Brandywine2161/flynn,benbjohnson/flynn,flynn/flynn,kgrz/flynn,schatt/flynn,clifff/flynn,flynn/flynn,TribeMedia/flynn,philiplb/flynn,flynn/flynn,felixrieseberg/flynn,ozum/flynn,arekkas/flynn,shads196770/flynn,supermario/flynn,arekkas/flynn,tonicbupt/flynn,benbjohnson/flynn,kgrz/flynn,justintung/flynn,jzila/flynn,josephglanville/flynn,supermario/flynn,josephglanville/flynn,schatt/flynn,pkdevbox/flynn,Brandywine2161/flynn,justintung/flynn,schatt/flynn,GrimDerp/flynn,supermario/flynn,GrimDerp/flynn,TribeMedia/flynn,arekkas/flynn,felixrieseberg/flynn,whouses/flynn,TribeMedia/flynn,arekkas/flynn,clifff/flynn,pkdevbox/flynn,shads196770/flynn,pkdevbox/flynn,TribeMedia/flynn,flynn/flynn,schatt/flynn,flynn/flynn,technosophos/flynn,schatt/flynn,felixrieseberg/flynn,schatt/flynn,benbjohnson/flynn,rikur/flynn,tonicbupt/flynn,philiplb/flynn,whouses/flynn,lmars/flynn,arekkas/flynn,pkdevbox/flynn,kgrz/flynn,clifff/flynn,whouses/flynn,technosophos/flynn,benbjohnson/flynn,rikur/flynn,lmars/flynn,GrimDerp/flynn,supermario/flynn,josephglanville/flynn,benbjohnson/flynn,shads196770/flynn,jzila/flynn,Brandywine2161/flynn,josephglanville/flynn,rikur/flynn,felixrieseberg/flynn,philiplb/flynn,clifff/flynn,lmars/flynn,ozum/flynn,shads196770/flynn,rikur/flynn,justintung/flynn,felixrieseberg/flynn,supermario/flynn,whouses/flynn,tonicbupt/flynn,tonicbupt/flynn,tonicbupt/flynn,ozum/flynn,GrimDerp/flynn,josephglanville/flynn,kgrz/flynn,kgrz/flynn,ozum/flynn,clifff/flynn,technosophos/flynn,Brandywine2161/flynn,GrimDerp/flynn,clifff/flynn,justintung/flynn,pkdevbox/flynn,ozum/flynn,justintung/flynn,technosophos/flynn,philiplb/flynn,rikur/flynn,philiplb/flynn,rikur/flynn,technosophos/flynn,kgrz/flynn,GrimDerp/flynn