change name of status field

pkg/apis/acid.zalan.do/v1/marshal.go

pkg/apis/acid.zalan.do/v1/postgresql_type.go

pkg/apis/acid.zalan.do/v1/util.go

pkg/apis/acid.zalan.do/v1/util_test.go

pkg/cluster/cluster.go

pkg/cluster/sync.go

pkg/cluster/types.go

pkg/controller/logs_and_api.go

pkg/controller/postgresql.go