Reduce default file log level for integration tests.
Reduce default file log level for integration tests.

The real/all test could fill the ramdisk depending on which vm and pg version were selected.

Debug level should be fine for most purposes and the level can be increased when needed.

pgbackrest/pgbackrest,pgmasters/backrest,pgbackrest/pgbackrest,pgbackrest/pgbackrest,pgmasters/backrest