test: sstable_compaction_test: stop compaction manager and test table using deferred action
test: sstable_compaction_test: stop compaction manager and test table using deferred action

To make sure they are properly stopped also on exception.

Signed-off-by: Benny Halevy <23c997c90eb8537635e9392d48e7af1bf1b2ca22@scylladb.com>
Message-Id: <20220220120939.2362590-2-23c997c90eb8537635e9392d48e7af1bf1b2ca22@scylladb.com>

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla