Increase # of commit log buckets ~4X for all non-prod environments

This also reduces the interval of the commitLogCheckpoint cron job to once
every three minutes, as this job needs to load all commit log bucket entities.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=191613858

java/google/registry/config/files/default-config.yaml

@@ -101,9 +101,9 @@ registryPolicy:
     the WHOIS database, and may modify these terms at any time.
 
 datastore:
-  # Number of commit log buckets in Datastore. Don't change after initial
+  # Number of commit log buckets in Datastore. Lowering this after initial
-  # install.
+  # install risks losing up to a days' worth of differential backups.
-  commitLogBucketsNum: 100
+  commitLogBucketsNum: 397
 
   # Number of EPP resource index buckets in Datastore. Don’t change after
   # initial install.

java/google/registry/env/crash/default/WEB-INF/cron.xml

@@ -107,7 +107,7 @@
     <description>
       This job checkpoints the commit log buckets and exports the diff since last checkpoint to GCS.
     </description>
-    <schedule>every 1 minutes synchronized</schedule>
+    <schedule>every 3 minutes synchronized</schedule>
     <target>backend</target>
   </cron>
 

java/google/registry/env/sandbox/default/WEB-INF/cron.xml

@@ -128,7 +128,7 @@
     <description>
       This job checkpoints the commit log buckets and exports the diff since last checkpoint to GCS.
     </description>
-    <schedule>every 1 minutes synchronized</schedule>
+    <schedule>every 3 minutes synchronized</schedule>
     <target>backend</target>
   </cron>