Reduce verbosity of Ephemeral Tombstone Purger

Reduce from NOTICE to INFO the Ephemeral tombstone progress messages,
as they are pretty verbose (2 lines per minute per Bucket) and consume
quite a bit of log space.

Change-Id: Iadf2fc7979b24dc815ada8eab9c9293ac957f2e0
Reviewed-on: http://review.couchbase.org/82863
Tested-by: Build Bot <[email protected]>
Reviewed-by: Manu Dhundi <[email protected]>

Author: daverigby

engines/ep/src/ephemeral_tombstone_purger.cc

@@ -91,7 +91,7 @@ bool EphTombstoneHTCleaner::run() {
                         getDeletedPurgeAge()));
         bucketPosition = bucket.startPosition();
 
-        LOG(EXTENSION_LOG_NOTICE /*INFO*/,
+        LOG(EXTENSION_LOG_INFO,
             "%s starting with purge age:%" PRIu64 "s",
             getDescription().data(),
             uint64_t(getDeletedPurgeAge()));
@@ -121,7 +121,7 @@ bool EphTombstoneHTCleaner::run() {
 
     // Completed a full pass. Sleep ourselves, and wakeup the StaleItemDeleter
     // task to complete the purge.
-    LOG(EXTENSION_LOG_NOTICE /*INFO*/,
+    LOG(EXTENSION_LOG_INFO,
         "%s %s. Took %" PRIu64 " ms. Visited %" PRIu64 " items, marked %" PRIu64
         " items as stale. Sleeping for %" PRIu64 " seconds.",
         getDescription().data(),