common/options/crimson.yaml.in: Bluestore by default

This partially reverts f4dee79
Until https://tracker.ceph.com/issues/69402 is resolved.

Signed-off-by: Matan Breizman <mbreizma@redhat.com>

Author: Matan-B

src/common/options/crimson.yaml.in

@@ -6,7 +6,7 @@ options:
   type: str
   level: advanced
   desc: backend type for a Crimson OSD (e.g seastore or bluestore)
-  default: seastore
+  default: bluestore
   enum_values:
   - bluestore
   - seastore