This test currently uses `test/lib/test_table.hh` to generate data for its test cases. This data generation facility is used by no other tests. Worse, it is redundant as we already have a random data generator with fixed schema, in `test/lib/mutation_source_test.hh`. So in this series, we migrate the test cases in said test file to random schema and its random data generation facilities. These are used by several other test cases and using random schema allows us to cover a wider (quasi-infinite) number of possibilities.
After migrating all tests away from it, `test/lib/test_table.hh` is removed.
This series also reduces the runtime of `fuzzy_test` drastically. It should now run in a few minutes or even in seconds (depending on the machine).
Fixes: #12944Closes#12574
* github.com:scylladb/scylladb:
test/lib: rm test_table.hh
test/boos/multishard_mutation_query_test: migrate other tests to random schema
test/boost/multishard_mutation_query_test: use ks keyspace
test/boost/multishard_mutation_query_test: improve test pager
test/boost/multishard_mutation_query_test: refactor fuzzy_test
test/boost: add multishard_mutation_query_test more memory
types/user: add get_name() accessor
test/lib/random_schema: add create_with_cql()
test/lib/random_schema: fix udt handling
test/lib/random_schema: type_generator(): also generate frozen types
test/lib/random_schema: type_generator(): make static column generation conditional
test/lib/random_schema: type_generator(): don't generate duration_type for keys
test/lib/random_schema: generate_random_mutations(): add overload with seed
test/lib/random_schema: generate_random_mutations(): respect range tombstone count param
test/lib/random_schema: generate_random_mutations(): add yields
test/lib/random_schema: generate_random_mutations(): fix indentation
test/lib/random_schema: generate_random_mutations(): coroutinize method
test/lib/random_schema: generate_random_mutations(): expand comment
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