Sample tekton pipeline
Note (2021/11/04): Due to git auth token issues, the DEV e2e tests are using https://github.com/idsb3t2/KEEP-pipeline-tests-resources repo. The other envs (mon01, dal, wdc, lon, fra, tok, osa, syd, tor, sao, bnpp) all use the original repo for the E2E tests: https://github.com/idsb3t1/KEEP-pipeline-tests-resource