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When a node is bootstrapped and joined a cluster as a non-voter and changes it's role to a voter, errors can occur while committing a new Raft record, for instance, if the Raft leader changes during this time. These errors are not critical and should not cause a node crash, as the action can be retried. Fixes scylladb/scylladb#20814 Backport: This issue occurs frequently and disrupts the CI workflow to some extent. Backports are needed for versions 6.1 and 6.2. - (cherry picked from commit775411ac56) - (cherry picked from commit16053a86f0) - (cherry picked from commit8c48f7ad62) - (cherry picked from commit3da4848810) - (cherry picked from commit228a66d030) Parent PR: #22253 Closes scylladb/scylladb#22358 * github.com:scylladb/scylladb: raft: refactor `remove_from_raft_config` to use a timed `modify_config` call. raft: Refactor functions using `modify_config` to use a common wrapper for retrying. raft: Handle non-critical config update errors in when changing status to voter. test: Add test to check that a node does not fail on unknown commit status error when starting up. raft: Add run_op_with_retry in raft_group0.