Amend current review process for other types of Firefox data collection requests

[rjweiss]

As described in issue #2, the current request form is designed for too general a use case. We would like to revise the current process to reflect the need to have data collection requests variants.

As discussed this morning we should make sure that we call out the process of re-reviewing approved data collection points e.g. extending Probe duration. The best practice is to reopen the previous bug with the request and request a review.

[fmarier]

Hey @liuche, could you please unassign me from this issue?