* prevent panic in podWithIP
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* add unit test, correct existing unit test
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* unit tests make more sense this way
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
While running make encountered the following error:
```
$ docker run -i -t --rm -v $PWD:/v --net=host -w /v golang:1.12 make
...
...
** presubmit/test-lowercase
plugin/kubernetes/metadata_test.go: t.Errorf("case %d expected metadata %v and got %v", i, tc.Md, md)
** presubmit/test-lowercase: please start with an upper case letter when using t.Error*()
Makefile:62: recipe for target 'presubmit' failed
make: *** [presubmit] Error 1
```
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
