v2.7.1

Bug Fix

Fixing logic around deleting nested membership for:

• CollectionsMembershipActor (10c0b73, 6f28a2f)
• AttachMembersActor (da7e892, 21be50b)

Fixes #4269 - CollectionsMembershipActor adds a previously unadded the collection when the _destroy flag is true.

Test Enhancements/Fixes

• Ensuring CSV usage has same namespace consideration (dd2baf4)
• Removing reference to Valkyrie on 2.x branch (72c1c1f)