ci: move local and saucelabs unit tests to circle (#27937)

Moving the tests over to CircleCI in pretty much "as-is" state just so that we can drop the dependency on Travis.

In the followup changes we plan to migrate these tests to run on sauce under bazel. @gregmagolan is working on that.

I've previously verified that all the tests executed in legacy-unit-tests-local already under bazel.
Therefore the legacy-unit-tests-local job is strictly not necessary any more, but given how flaky legacy-unit-tests-saucelabs is,
it is good to have the -local job just so that we can quickly determine if any failure is a flake or legit issue
(the bazel version of these tests could theoretically run in a slightly different way and fail or not fail in a different way, so having -lcoal job is just an extra safety check).

This change was coauthored with @devversion

PR Close #27937

scripts/ci/build.sh

@@ -20,6 +20,8 @@ if [[ ${CI_MODE:-} == "bazel" ]]; then
 fi
 
 travisFoldStart "tsc tools"
+  # TODO: I think these three can be deleted... but I'm not sure
+  #       let's delete them one at a time and test on CI
   $(npm bin)/tsc -p tools
   $(npm bin)/tsc -p packages/compiler/tsconfig-tools.json
   $(npm bin)/tsc -p packages/compiler-cli/tsconfig-tools.json

scripts/ci/install.sh

@@ -5,64 +5,11 @@ set -u -e -o pipefail
 TRAVIS=${TRAVIS:-}
 CI_MODE=${CI_MODE:-}
 
-# Setup environment
-readonly thisDir=$(cd $(dirname $0); pwd)
-source ${thisDir}/_travis-fold.sh
-
-
-# If the previous commands in the `script` section of .travis.yaml failed, then abort.
-# The variable is not set in early stages of the build, so we default to 0 there.
-# https://docs.travis-ci.com/user/environment-variables/
-if [[ ${TRAVIS_TEST_RESULT=0} == 1 ]]; then
-  exit 1;
-fi
 
 
 mkdir -p ${LOGS_DIR}
 
 
-# TODO: install nvm?? it's already on travis so we don't need it
-#curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.31.0/install.sh | bash
-
-
-# Install node
-#nvm install ${NODE_VERSION}
-
-
-# Install version of yarn that we are locked against
-travisFoldStart "install-yarn"
-  curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version "${YARN_VERSION}"
-travisFoldEnd "install-yarn"
-
-
-# Install all npm dependencies according to yarn.lock
-travisFoldStart "yarn-install"
-  (node tools/npm/check-node-modules --purge && yarn postinstall) || yarn install --frozen-lockfile --non-interactive
-travisFoldEnd "yarn-install"
-
-
-
-# Install Chromium
-if [[ ${TRAVIS} &&
-  ${CI_MODE} == "js" ||
-  ${CI_MODE} == "e2e" ||
-  ${CI_MODE} == "e2e_2"
-]]; then
-  travisFoldStart "install-chromium"
-    (
-      ${thisDir}/install-chromium.sh
-
-      # Start xvfb for local Chrome used for testing
-      if [[ ${TRAVIS} ]]; then
-        travisFoldStart "install-chromium.xvfb-start"
-          sh -e /etc/init.d/xvfb start
-        travisFoldEnd "install-chromium.xvfb-start"
-      fi
-    )
-  travisFoldEnd "install-chromium"
-fi
-
-
 # Install Sauce Connect
 if [[ ${TRAVIS}] && (${CI_MODE} == "saucelabs_required" || ${CI_MODE} == "saucelabs_optional") ]]; then
   travisFoldStart "install-sauceConnect"

scripts/ci/test-js.sh

@@ -1,11 +0,0 @@
-#!/usr/bin/env bash
-
-set -u -e -o pipefail
-
-# Setup environment
-readonly thisDir=$(cd $(dirname $0); pwd)
-source ${thisDir}/_travis-fold.sh
-
-travisFoldStart "test.unit.localChrome"
-  $(npm bin)/karma start ./karma-js.conf.js --single-run --browsers=${KARMA_JS_BROWSERS}
-travisFoldEnd "test.unit.localChrome"