fix: metadata capitalization

[sicoyle]

Description

We currently have consumerGroup, consumerID, and consumerId metadata fields on components. I think we should remove the consumerId metadata field as the capitalization difference is confusing, and there are very few components with this capitalization, so I'm wondering if this is an oversight and is fine to be corrected. I know that we do not strive for consistency in naming just for name sake, but I do think we should strive for capitalization consistency on fields with the same name across the board.

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #[issue number]

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• [ ] Code compiles correctly
• [ ] Created/updated tests
• [ ] Extended the documentation / Created issue in the https://github.com/dapr/docs/ repo: dapr/docs#[issue number]