Merge pull request #167 from traeak/devtoolset-8

jenkins/bin/environment.sh: add detection for devtoolset-8 for branch build
tree: c8be81a06b93f4039087395bbe84be611ea674be
  1. abi/
  2. bin/
  3. docker/
  4. jenkins/
  5. README.md
README.md

trafficserver-ci