Use enhanced PV support in Kind 0.7.0

[jglick]

kubernetes-sigs/kind#1157 is supposed to be in https://github.com/kubernetes-sigs/kind/releases/tag/v0.7.0 (announcement) so let us try it!

[jglick]

I think ContainerExecDecoratorTest.testCommandExecution may be failing…

[jglick]

kubernetes-plugin/src/test/java/org/csanchez/jenkins/plugins/kubernetes/pipeline/ContainerExecDecoratorTest.java

Line 164 in 34d0848

assertTrue("Output should contain pid: " + r.output, PID_PATTERN.matcher(r.output).find());

[jglick]

From build 1:

java.lang.AssertionError: 
 Output should contain pid: Executing sh script inside container busybox of pod test-command-execution-m0rc2
 Executing command: "sh" "-c" "cd /tmp; echo [4] pid is \$\$ > test; cat /tmp/test" 
 exit
 
 	at org.junit.Assert.fail(Assert.java:88)
 	at org.junit.Assert.assertTrue(Assert.java:41)
 	at org.csanchez.jenkins.plugins.kubernetes.pipeline.ContainerExecDecoratorTest.testCommandExecution(ContainerExecDecoratorTest.java:164)

Looks like one of the threads failed but others worked? Maybe a flaky test? Test took 549s to fail, which suggests something was hanging. Also seems stuck here in build 2.

[jglick]

Now passes, though it seems unreasonable long:

​[INFO] Tests run: 13, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 533.232 s - in org.csanchez.jenkins.plugins.kubernetes.pipelie.ContainerExecDecoratorTest

Seems each of the test cases takes ~40s. Not a regression from master, though.

[jglick]

Most of that time seems to be spent in KubernetesTestUtil.deletePods.

[Vlatombe]

Indeed, i've noticed this slowness for a while, not sure when it started to appear...