* engine check when install extension
* gallery install/update and vsix install
* FIX COMMENTS
* Fix the detail not loading issue when version is invalid
* add more comments and adress PR comments
* add install telemetry for install from vsix scenario
* correct the name of the version property for telemetry
* add an extension for integration tests
* setup ads before running test
* test setup
* test cases
* bash script
* shorter temp folder name
* code cleanup
* add commented out original code
* fix test error
* test result path
* rename results file
* change file path
* report smoke test results
* test stablize
* test stablization and configurable test servers
* fix smoke test error
* connection provider
* simplify the integration test script
* add comment
* fix tslint error
* address PR comments
* add temp log to check whether the environment variable is already set
* remove temp log
* move api definition to testapi typing file
* exclude integration tests extension
* address comments
