Migrate the ci (V2) to use KuzDoc (#47)

## What does this PR do?
Migrate the CI to use KuzDoc.

### How should this be manually tested?

Go take a look at the CI job for the dead-link check.

To test the build and deploy, you can follow the steps of the Doc Dev Deploy in the .travis.yml file and test them locally.

Author: xbill82

.gitignore

@@ -12,4 +12,5 @@ codecov
 
 node_modules/
 doc/framework
-frontmatter-errors.json
+frontmatter-errors.json
+node_modules

.travis.yml

@@ -38,11 +38,13 @@ jobs:
       node_js: 10
 
       before_script:
+        - npm ci
         - npm run doc-prepare
-        - npm run --prefix doc/framework clone-repos
+        - $(npm bin)/kuzdoc iterate-repos:install --repos_path doc/framework/.repos/
+        - $(npm bin)/kuzdoc framework:link -d /sdk/csharp/2/ -v 2
       script:
         - gem install typhoeus
-        - HYDRA_MAX_CONCURRENCY=20 npm run --prefix doc/framework dead-links
+        - cd doc/framework/ && HYDRA_MAX_CONCURRENCY=20 ruby .ci/dead-links.rb -p src/sdk/csharp/2/
 
     - stage: Tests
       name: Build documentation
@@ -86,6 +88,7 @@ jobs:
       language: node_js
       node_js: 10
       env:
+        - BRANCH=dev
         - NODE_ENV=production
         - S3_BUCKET=docs-next.kuzzle.io
         - CLOUDFRONT_DISTRIBUTION_ID=E2ZCCEK9GRB49U
@@ -99,6 +102,7 @@ jobs:
 
       install:
         - pip install awscli --upgrade --user
+        - npm ci
 
       script:
         - npm run doc-prepare
@@ -132,6 +136,7 @@ jobs:
 
       install:
         - pip install awscli --upgrade --user
+        - npm ci
 
       script:
         - npm run doc-prepare