9662de85f5
This add support for Azure snitch. The work is an adaptation of AzureSnitch for Apache Cassandra by Yoshua Wakeham: https://raw.githubusercontent.com/yoshw/cassandra/9387-trunk/src/java/org/apache/cassandra/locator/AzureSnitch.java Also change `production_snitch_base` to protect against a snitch implementation setting DC and rack to an empty string, which Lubos' says can happen on Azure. Fixes #8593 Closes #9084 * github.com:scylladb/scylla: scylla_util: Use AzureSnitch on Azure production_snitch_base: Fallback for empty DC or rack strings azure_snitch: Azure snitch support