Update the helm chart of Harbor to use 1.5 image. Specifically
`1.5.0-chart-patch` to include the fix to #4496 (for integration reason
this fix will not be merge to release branch).
Verified against kubenetes v1.10.0
* Update Harbor helm chart to deploy Harbor 1.4.0 release
* Change version to 0.1.0 and fix a doc error
* Fix auth_mode default value
* Refine doc and fix a typo