4cd5847761
In #14668, we have decided to introduce a new scylla.yaml variable
for the schema commitlog segment size. The segment size puts a limit
on the mutation size that can be written at once, and some schema
mutation writes are much larger than average, as shown in #13864.
Therefore, increasing the schema commitlog segment size is sometimes
necessary.
(cherry picked from commit 5b167a4ad7)