Add a convenient link to re run a single test.
Add a convenient link to re run a single test.

Add a convenient link to re run a single test case at the top of each case's log.

google/gjstest,google/gjstest,google/gjstest,aungzanbaw/gjstest,google/gjstest,aungzanbaw/gjstest,aungzanbaw/gjstest,aungzanbaw/gjstest