jichenjc: not assign floating ip when there are multiple controller nodes

JobBuild
1276
07-12 08:08
pull-cluster-api-provider-openstack-build 1551465139071356928 1551377031034310656 1551135755508649984 1551134833063759872 1546768398392758272
pull-cluster-api-provider-openstack-e2e-test 1551465139146854400 1551377031118196736 1551135755592536064 1551134833147645952 1546768398468255744
pull-cluster-api-provider-openstack-test 1551465139104911360 1551377031067865088 1551135755550593024 1551134833105702912 1546768398434701312