test: Relax make_sstable_easy in compaction tests
test: Relax make_sstable_easy in compaction tests

The version argument can be omitted, the env.make_sstable will
default it to highest version. The generation argument is left
and defaulted to 1.

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@scylladb.com>

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