ScyllaDB release: version 1.5.1

ScyllaDB 1.5.1, a bugfix release for the ScyllaDB 1.5 stable branch, was announced by Tzach Livyatan on February 21, 2017, addressing several issues such as excessive disk usage during sstable resharding, installation errors due to existing users, and problems with the setup script not listing local SSD disks on Google Cloud VMs. This release supports backward compatibility and rolling upgrades, encouraging users to transition to the latest stable version, ScyllaDB 1.6. Key fixes include resolving RPC message tracing issues, optimizing Prometheus metric generation to reduce latency, and preventing potential crashes when disk writes are delayed. Users are encouraged to report any encountered problems, ensuring continuous improvement and support for the ScyllaDB platform.