What is the problem?

When editing a registry, if I put the wrong username, password or domain, then Save and Update, I get what seems to be a successful notice saying "Registry updated". I think the authentication check is being incorrectly skipped when editing a registry (but correctly executed when adding a registry).

Steps to reproduce the problem:

1. Click on Cluster on the left sidebar
2. Under Docker Registries, click Add Remote Registry
3. Enter any dummy invalid values in Username, Password, and Domain
4. Click on Add Remote Registry in the popup dialog box
5. I get a red notice saying 1112 : Athentication failed. Either username, password, or domain is incorrect. (This is good and expected)
6. Under Docker Registries, click on Add Remote Registry
7. Enter valid values in Username, Password, and Domain
8. Click on Add Remote Registry in the popup dialog box
9. I get a green notice saying: Docker registry successfully added! (This is good and expected)
10. Now, under Actions, click the Edit icon for the registry you just added
11. Enter any dummy invalid values in Username, Password, and Domain
12. Click on Save and Update in the popup dialog box
13. I get a green notice saying: Registry updated. (This is the bug. I expect to see the same authentication failure as in step 5 above)

Answers to the following questions where applicable:

• CapRover version?

CapRover  1.9.0

• Your OS and version?

Digital Ocean droplet: caprover-ubuntu-s-1vcpu-1gb-tor1-01

Ubuntu 18.04.5 LTS (GNU/Linux 4.15.0-132-generic x86_64)
  System information as of Sat Feb 20 00:25:38 UTC 2021

  System load:                    0.16
  Usage of /:                     50.5% of 24.06GB
  Memory usage:                   62%
  Swap usage:                     0%
  Processes:                      124

• RAM?

1 GB