build(aio): big move of docs related files (#14361)

All the docs related files (docs-app, doc-gen, content, etc)
are now to be found inside the `/aio` folder.

The related gulp tasks have been moved from the top level
gulp file to a new one inside the `/aio` folder.

The structure of the `/aio` folder now looks like:

```
/aio/
  build/         # gulp tasks
  content/       #MARKDOWN FILES for devguides, cheatsheet, etc
    devguides/
    cheatsheets/
  transforms/    #dgeni packages, templates, etc
  src/
    app/
    assets/
    content/    #HTML + JSON build artifacts produced by dgeni from /aio/content.
                #This dir is .gitignored-ed
  e2e/           #protractor tests for the doc viewer app
  node_modules/ #dependencies for both the doc viewer builds and the dgeni stuff
                #This dir is .gitignored-ed
  gulpfile.js   #Tasks for generating docs and building & deploying the doc viewer
```

Closes #14361

scripts/ci-lite/build.sh

@@ -34,7 +34,7 @@ if [[ ${CI_MODE} == "aio" ]]; then
   echo 'travis_fold:start:BUILD.aio'
 
   # Build angular.io
-  cd "`dirname $0`/../../angular.io"
+  cd "`dirname $0`/../../aio"
   yarn run build
   cd -
 

scripts/ci-lite/deploy_aio_staging.sh

@@ -13,13 +13,12 @@ echo 'travis_fold:start:aio.deploy'
 # Setup environment
 cd `dirname $0`
 source ./env.sh
-cd ../..
 
 
 echo 'travis_fold:start:aio.deploy.staging'
 
 # Deploy angular.io to staging
-cd "`dirname $0`/../../angular.io"
+cd "`dirname $0`/../../aio"
 yarn run deploy-staging
 cd -
 

scripts/ci-lite/install.sh

@@ -32,7 +32,7 @@ node tools/npm/check-node-modules --purge || npm install
 echo 'travis_fold:end:install.node_modules'
 
 
-if [[ ${TRAVIS} && (${CI_MODE} == "e2e" || ${CI_MODE} == "aio") ]]; then
+if [[ ${TRAVIS} && (${CI_MODE} == "e2e" || ${CI_MODE} == "aio" || ${CI_MODE} == "docs_test") ]]; then
   # Install version of yarn that we are locked against
   echo 'travis_fold:start:install.yarn'
   curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version "${YARN_VERSION}"
@@ -43,7 +43,7 @@ fi
 if [[ ${TRAVIS} && ${CI_MODE} == "aio" ]]; then
   # angular.io: Install all yarn dependencies according to angular.io/yarn.lock
   echo 'travis_fold:start:install.aio.node_modules'
-  cd "`dirname $0`/../../angular.io"
+  cd "`dirname $0`/../../aio"
   yarn install
   cd -
   echo 'travis_fold:end:install.aio.node_modules'

scripts/ci-lite/test_aio.sh

@@ -12,19 +12,24 @@ echo 'travis_fold:start:test.aio'
 # Setup environment
 cd `dirname $0`
 source ./env.sh
-cd ../..
 
 
 echo 'travis_fold:start:test.aio.lint'
-
 # Lint the code
-cd "`dirname $0`/../../angular.io"
+cd ../../aio
 yarn run lint
 cd -
-
 echo 'travis_fold:end:test.aio.lint'
 
 
+echo 'travis_fold:start:test.aio.doc-gen'
+# Lint the code
+cd ../../aio
+$(npm bin)/gulp docs
+cd -
+echo 'travis_fold:end:test.aio.doc-gen'
+
+
 echo 'travis_fold:start:test.aio.localChromeSetup'
 
 # Start local Chrome
@@ -36,24 +41,18 @@ echo 'travis_fold:end:test.aio.localChromeSetup'
 
 
 echo 'travis_fold:start:test.aio.unit'
-
 # Run unit tests
-cd "`dirname $0`/../../angular.io"
+cd ../../aio
 yarn test -- --single-run
 cd -
-
 echo 'travis_fold:end:test.aio.unit'
 
-
 echo 'travis_fold:start:test.aio.e2e'
-
 # Run e2e tests
-cd "`dirname $0`/../../angular.io"
+cd ../../aio
 yarn start &
 yarn run e2e
 cd -
-
 echo 'travis_fold:end:test.aio.e2e'
 
-
 echo 'travis_fold:end:test.aio'

scripts/ci-lite/test_docs.sh

@@ -12,8 +12,9 @@ echo 'travis_fold:start:test_docs'
 # Setup environment
 cd `dirname $0`
 source ./env.sh
-cd ../..
 
+cd ../../aio
 $(npm bin)/gulp docs-test
+cd -
 
 echo 'travis_fold:end:test_docs'