Move storage portion of replicateBranchDeletion ITs
All other ITs split e2e and storage tests on stable-2.16, so this change
only updates the new replicateBranchDeletion tests that were added in
The e2e check for if the destination branch is removed or not stays in
ReplicationIT and the check that a task is created in storage when the
branch delete API is invoked moves to ReplicationStorageIT.
This split allows the best practices for verifying e2e and storage to be
3 files changed