fix CLOUDSTACK-1852, use findHostsForMigration to list available hosts for migration
fix CLOUDSTACK-1852, use findHostsForMigration to list available hosts for migration

mufaddalq/cloudstack-datera-driver,mufaddalq/cloudstack-datera-driver,mufaddalq/cloudstack-datera-driver,mufaddalq/cloudstack-datera-driver,mufaddalq/cloudstack-datera-driver,mufaddalq/cloudstack-datera-driver