This fix tries to improve the time to run TestRunUnshareProc
in #19425.
In this fix goroutines are used to run test cases in parallel to
prevent the test from taking a long time to run.
As the majority of the execution time in the tests is from
multiple executions of 'docker run' and each of which takes
several seconds, parallel executions improve the test time.
Since each 'docker run' is independent, the purpose of the
test is not altered in this fix.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: 526c2fe942107908fe324db2ecceee14b69cb191
Component: engine
727ed3e381