Remove Travis in favor of Github Workflows (#5281)

.travis.yml

-# Travis continuous integration system configuration file.
-# Read more follows:
-# * https://docs.travis-ci.com/user/customizing-the-build/
-# * https://docs.travis-ci.com/user/reference/bionic/
-# * https://docs.travis-ci.com/user/installing-dependencies/
-# * https://docs.travis-ci.com/user/firefox/
-# * https://config.travis-ci.com/ref/job/addons/apt
-
-sudo: required
-dist: bionic
-language: node_js
-node_js: 12.16.0
-
-addons:
-  firefox: "latest"
-
-apt:
-  packages:
-  - google-chrome
-  sources:
-  - google-chrome-stable
-  update: true
-
-git:
-  depth: 500
-  quiet: true
-
-cache:
-  directories:
-    - .cached_tools
-    - ~/.cache
-    - node_modules
-
-before_install:
-  - export NG_CLI_ANALYTICS=ci
-  - export DOCKER_CLI_EXPERIMENTAL=enabled
-  - export GO111MODULE=on
-  - export GOPROXY=https://proxy.golang.org
-  - export PATH=$PATH:$GOPATH/bin
-  - export NODE_OPTIONS=--max-old-space-size=8192
-  - eval "$(gimme 1.13.9)"
-
-# `npm ci` will run between `before_install` and `before_script`.
-
-before_script:
-  - echo "Recheck versions before job."
-  - go version
-  - docker --version
-  - google-chrome-stable --version
-  - firefox --version
-
-jobs:
-  include:
-    - stage: test
-      name: "Code check & linting"
-      before_script:
-        - aio/scripts/install-codegen.sh
-      script: npm run check
-    - name: "Unit tests"
-      script: npm run test:coverage
-      after_success:
-        - rm -rf $TRAVIS_BUILD_DIR/.tmp
-        - bash <(curl -s https://codecov.io/bash)
-    - name: "Helm linting"
-      cache: false
-      install:
-        - curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash
-        - wget https://github.com/garethr/kubeval/releases/download/0.14.0/kubeval-linux-amd64.tar.gz
-        - mkdir kubeval
-        - tar xf kubeval-linux-amd64.tar.gz -C kubeval
-        - export PATH="$PATH:$(pwd)/kubeval"
-      before_script: skip  # We don't need Docker nor Go
-      script:
-        - aio/scripts/helm-lint.sh
-    - name: "e2e tests"
-      script: npm run cluster:start && npm run e2e
-
-    - stage: deploy
-      name: "Development release"
-      script:
-        - docker login -u $DOCKER_USER -p $DOCKER_PASS
-        - npm run docker:push:head
-
-    - stage: release
-      name: "Release"
-      script:
-        - docker login -u $DOCKER_RELEASE_USER -p $DOCKER_RELEASE_PASS
-        - npm run docker:push
-    # Manual step for now since it requires to add a GitHub Token to Travis which would be a security issue
-    # - name: "Helm repository generation"
-    #   cache: false
-    #   install:
-    #     - curl -L https://git.io/get_helm.sh | bash && helm init --skip-refresh --client-only
-    #     - git remote set-branches origin '*' && git fetch --unshallow
-    #     # GTHUB_WRITE_TOKEN is a travis secret variable that is generated from https://help.github.com/en/github/authenticating-to-github/creating-a-personal-access-token-for-the-command-line
-    #     - git remote set-url origin https://x-access-token:${GITHUB_WRITE_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git
-    #   before_script: skip  # We don't need Docker nor Go
-    #   script:
-    #     - sh ./aio/scripts/
-
-stages:
-  - test
-  - name: deploy
-    if: branch = master AND type != pull_request
-  - name: release
-    if: tag IS present AND type != pull_request