* Treat absence of port/service in SRV as wildcard
Normally, a SRV-request should have the form
_<service>._<port>.<name>.<zone>. The k8s peer-finder which is used for
bootstrapping by some applications will however query for SRV at
<name>.<zone>.
To compensate for this behaviour, treat the absence of _<service> and
_<port> as wildcards.
* Modified tests with new SRV behaviour
Added a testcase for a SRV request without port & service
Removed now valid query from invalidSRVQueries
* Forgot to run gofmt on test/kubernetes_test.go