Document issue with older fdb bindings and DNS support

[johscheuer]

Description

Documents the limitations of the copy approach for the primary FDB lib, see: apple/foundationdb#11222

Fixes: #1950

Type of change

Please select one of the options below.

• Documentation

Discussion

I also added tini to the operator image to allow the manager to generate coredumps, if the process is PID 1 it doesn't work.

Testing

Documentation

Updated.

Follow-up

[foundationdb-ci]

Result of fdb-kubernetes-operator-pr on Linux CentOS 7

• Commit ID: 2dfb09b
• Duration 0:04:44
• Result: ❌ FAILED
• Error: Error while executing command: IMG=${REGISTRY}/${OPERATOR_IMAGE} make container-build container-push. Reason: exit status 2
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[foundationdb-ci]

Result of fdb-kubernetes-operator-pr on Linux CentOS 7

• Commit ID: 73ccb45
• Duration 2:00:41
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[brownleej]

👍