Fix network warning message

[jodh-intel]

getLinkByName() was making a log call but specifying the wrong logging
function meaning the parameters were not being logged correctly.

Fixes #501.

Signed-off-by: James O. D. Hunt james.o.hunt@intel.com

[grahamwhaley]

nice little catch. I ran a couple of greps to see if there were any more like that, or the inverse (calling warnf with no % modifiers - as my mind tells me that is something I have seen go past my eyes...). Nothing leapt out.

We have a F26 CI failure - I strongly suspect unrelated, but for ref (/cc @amshinde @chavafg )

12:37:02 ok  	github.com/containers/virtcontainers	16.222s
12:37:09 Some output on stderrtime="2017-12-11T12:37:09Z" level=error msg="hook error" error="exit status 1: stdout: , stderr: " hook-type=pre-start source=virtcontainers subsystem=hooks
12:37:57 BenchmarkCreateStartStopDeletePodQemuHypervisorNoopAgentNetworkCNI-4   	--- FAIL: BenchmarkCreateStartStopDeletePodQemuHypervisorNoopAgentNetworkCNI-4
12:37:57 	api_test.go:1729: Could not delete pod: running [/usr/sbin/iptables -t nat -D POSTROUTING -s 10.88.0.34/16 -j CNI-43621ab25fddc3dba3fe8fe8 -m comment --comment name: "mynet" id: "8fede512-beaa-4b3c-9d85-c5a2bc47d8f4-0" --wait]: exit status 2: iptables v1.6.1: Couldn't load target `CNI-43621ab25fddc3dba3fe8fe8':No such file or directory
12:37:57 		
12:37:57 		Try `iptables -h' or 'iptables --help' for more information.
12:37:57 FAIL
12:37:57 exit status 1
12:37:57 FAIL	github

I'll kick a rebuild

[jodh-intel]

@grahamwhaley - yep. I'll try to get round to updating clearcontainers/tests#590 (including adding a check for rogue format specifiers) as we need to be able to run such a tool as part of the CI imho for CC + kata.

[sboeuf]

LGTM