RFR(S): 8195809: [TESTBUG] jps and jcmd -l support for Docker containers is not tested

[mikhailo.seledtsov at oracle.com]

Severin, Bob, Leonid,

    Thank you for the initial round of review and your feedback. I will 
address your feedback and post an updated webrev in the next couple of days.

Thank you,

Misha

On 7/29/19 8:46 PM, mikhailo.seledtsov at oracle.com wrote:
> Please review this change that:
>   - adds test case for "jcmd -l" and "jcmd <pid> help" where jcmd is 
> executed on a host/node outside the container,
>     while a targeted JVM is running inside a container
>   - factors out some common functionality to DockerTestUtils and 
> docker.Common
>
> Please note:
>   - the "jcmd -l" works in this configuration, however the JCMD's and 
> Target's username and UID have to match
>     (per design)
>   - the "jcmd help", "jcmd JFR.start" or any other JCMD command 
> besides "jcmd -l" does not work in this configuration
>     (Filed "JDK-8228343: JCMD and attach fail to work across Linux 
> Container boundary")
>     The test case is commented out, however can be used for 
> reproducing the issue, and will be enabled
>     once the bug is fixed.
>
>
>     JBS: https://bugs.openjdk.java.net/browse/JDK-8195809
>     Webrev: http://cr.openjdk.java.net/~mseledtsov/8195809.00/
>     Testing:
>       - ran the new test multiple times on Linux-x64
>       - ran TestJCMDWithSideCar multiple times on Linux-x64
>       - ran all Docker/Container tests (HotSpot and JDK)
>     All PASS
>
> Thank you,
> Misha
>