CDK3 server adapter editor: password text field should *NOT* show password (use a password type text field)

1. ASSERT: make sure that you have a cdk3/minishift-server-adapter
2. EXEC: open up the server editor for it
3. EXEC: look at the password field in the "Credentials" section of the editor

Result:

The password is visible in plain text

Expected:
we should NOT show the password in plain sight, we should use a password style text field like we usually do in other places