rules_r: executable perms for test script
rules_r: executable perms for test script

Reviewers: razvanm

Reviewed By: razvanm

Differential Revision: https://phabricator.grailbio.com/D12655

fbshipit-source-id: 1857fc4

grailbio/rules_r,grailbio/rules_r,grailbio/rules_r,grailbio/rules_r,grailbio/rules_r