Debug and restore snapshot functionality

[cer]

• kafka-consumer-groups --bootstrap-server kafka:29092 --reset-offsets appears not to support setting offsets of individual partitions.
• This testing should be moved back to view support

[cer]

• set-consumer-group-offset.sh was not executable
• This test did fail
• Offsets were reset to earliest
• Test passed

There should be a single test unless state of view is reset.