fix: Fix some issues
Created by: harrisonliu5
What type of PR is this?
/kind api-change
What this PR does / why we need it:
fix: Add cluster when getting kubeconfig in Credential
fix: Fix the description of the uploaded icon in App template
fix: Fix the secret and configmap bugs in the deployment
Which issue(s) this PR fixes:
29adf457 Fixes #650 (closed) #2339
/assign @leoendless