Background (Required)

Previous work for multiple sources:  https://github.com/argoproj/argo-cd/blob/master/docs/proposals/multiple-sources-for-applications.md

Multiple sources for applications has been introduced in ArgoCD, but still needs CLI support as an additional feature. 
See https://github.com/argoproj/argo-cd/blob/master/docs/proposals/multiple-sources-for-applications.md#changes-to-cli 

Out of scope

Implementation of the feature

Approach (Required)

Make a PR detailing feature to upstream ArgoCD in the following format: https://github.com/argoproj/argo-cd/blob/master/docs/proposals/001-proposal-template.md 

• Submit a proposal to GitHub
• Bring it up to the community meeting
• Resolve the issues

Dependencies

Acceptance (and any requests for changes) from the upstream Argo CD community.

Acceptance Criteria (Mandatory)

• Create proposal for CLI support for multiple sources
• Present proposal to Argo CD Community
• Get proposal accepted 

Done Checklist

• Proposal is completed, reviewed, and accepted
• Acceptance criteria are met