Dropping support for 6.1 in the operator

Sharing this here for more visibility: Drop support for 6.1 · Issue #743 · FoundationDB/fdb-kubernetes-operator · GitHub

This is currently only a discussion and I wanted to gather some community feedback so if you are using the operator to manage 6.1 clusters please comment here. The idea would be if nobody uses 6.1 anymore with the operator we can drop the support and remove the binaries and some additional logic for this version.