test: Fix tracking VMs
test: Fix tracking VMs

Cluster.Boot calls DumpLogs if bootstrapping fails, so the booted
instances need to be added to Cluster.defaultInstances as soon as
possible so that they are available for grabbing logs (and so that
DumpLogs does not panic accessing Cluster.defaultInstances[0])

Signed-off-by: Lewis Marshall <748e1641a368164906d4a0c0e3965345453dcc93@lmars.net>

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