Rework `ScyllaLogFile.wait_for()` method to make it easier
to add required methods to ScyllaNode class of ccm-like shim.
Also, added `ScyllaLogFile.grep_for_errors()` method and
reworked `ScyllaLogFile.grep()`
Some of the tests in the test suite have proven to be more problematic
in adjusting to RF-rack-validity. Since we'd like to run as many tests
as possible with the `rf_rack_valid_keyspaces` configuration option
enabled, let's disable it in those. In the following commit, we'll enable
it by default.
The workflow of becoming a voter changes with the "limited voters"
feature, as the node will no longer become a voter on its own, but the
votership is being managed by the topology coordinator. This therefore
breaks the `stop_before_becoming_raft_voter` test, as that injection
relies on the old behavior.
We will disable the test for this particular case for now and address
either fixing of complete removal of the test in a follow-up task.
Refs: scylladb/scylladb#23418
After recent changes #18640 and #19151 started to reproduce for
stop_after_sending_join_node_request and
stop_after_bootstrapping_initial_raft_configuration error injections too.
The solution is the same: deselect the tests.
Fixes#23302Closesscylladb/scylladb#23405
