Modify replication list unsave when modify username or possword

Harbor resource requirement doc

Fix code issues found by Gas

Update swagger doc to include description for status code 415 

OVA migration guide

Dump harbor version for CI

Modify create endpoint ping icon undisappear auto about #4102

Modify issue about endpoint delection unfreash

Add username and pwd for target and unselected project name and targe…

Fix images tag issue.

Fix issues

High availability Deployment installation guide

Include go-redsync v1.0.1 in vendor

move the image tag out
only remove the first : in the keypair.

Add place holder for injecting UAA host

As this is for tile deployment only, so add a shortcut for tile/bosh
script to add entry in /etc/hosts inside the container.
Due to effort consideration I don't think we want to render
docker-compose in `prepare` script.

Fix Nil pointer issue in login function

Update manual test cases for replication

Set replication list as single selection about #4107

Update keepalived config file