Add standup and release issue to testing page

Why is this change being made?

Continuing to document all grouptesting team processes for more clarity and potential for iteration. This MR adds the daily async standup process, as well as the new release issue process.

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what