Cross Reference: /external/grpc-grpc/test/distrib/php

`Name`	`Date`	`Size`
Up to higher level directory
`distribtest.php`	22-Oct-2020	`906`
`run_distrib_test.sh`	22-Oct-2020	`820`
`run_distrib_test_macos.sh`	22-Oct-2020	`825`