Travis cache (#3972)

* Use name instead of env

* Enable cache dist

* enable only master and dev

* rename e2e lib

* add nx and smart build

* disable packaging and create demo shell stages

* use same name

* Enable affected e2e for core and process

* Enable affected libs check on all the e2e

* fix e2e condition

* Enable unit tests

* Manage case deps not present

* add name typo

* add affected folder to check e2e

* change an e2e test

* remove branch typo

* Update .travis.yml

.gitignore

@@ -4,6 +4,7 @@ bundles
 workspace.xml
 .idea/
 dist/
+tmp
 e2e-output/
 e2e/downloads/
 ng2-components/coverage/