This patch series makes all auth writes serialized via raft. Reads stay
eventually consistent for performance reasons. To make transition to new
code easier data is stored in a newly created keyspace: system_auth_v2.
Internally the difference is that instead of executing CQL directly for
writes we generate mutations and then announce them via raft group0. Per
commit descriptions provide more implementation details.
Refs https://github.com/scylladb/scylladb/issues/16970
Fixes https://github.com/scylladb/scylladb/issues/11157Closesscylladb/scylladb#16578
* github.com:scylladb/scylladb:
test: extend auth-v2 migration test to catch stale static
test: add auth-v2 migration test
test: add auth-v2 snapshot transfer test
test: auth: add tests for lost quorum and command splitting
test: pylib: disconnect driver before re-connection
test: adjust tests for auth-v2
auth: implement auth-v2 migration
auth: remove static from queries on auth-v2 path
auth: coroutinize functions in password_authenticator
auth: coroutinize functions in standard_role_manager
auth: coroutinize functions in default_authorizer
storage_service: add support for auth-v2 raft snapshots
storage_service: extract getting mutations in raft snapshot to a common function
auth: service: capture string_view by value
alternator: add support for auth-v2
auth: add auth-v2 write paths
auth: add raft_group0_client as dependency
cql3: auth: add a way to create mutations without executing
cql3: run auth DML writes on shard 0 and with raft guard
service: don't loose service_level_controller when bouncing client_state
auth: put system_auth and users consts in legacy namespace
cql3: parametrize keyspace name in auth related statements
auth: parametrize keyspace name in roles metadata helpers
auth: parametrize keyspace name in password_authenticator
auth: parametrize keyspace name in standard_role_manager
auth: remove redundant consts auth::meta::*::qualified_name
auth: parametrize keyspace name in default_authorizer
db: make all system_auth_v2 tables use schema commitlog
db: add system_auth_v2 tables
db: add system_auth_v2 keyspace
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