Squelch warnings from updates

Updates don't need to be nearly as noisy as they were at first; let's
not flood the error log with updated messages.

Change-Id: I6de2264a18ee7c513f58b7eac20c94355f7c52ca

src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Ref.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Ref.java b/src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Ref.java
index 58c74d2..c7e4bb2 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Ref.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Ref.java
@@ -72,12 +72,12 @@
 
   public void save() {
     lastUpdated = new Date();
+    log.debug(String.format("Saving Ref: %s, %s, %s", project, ref, commit));
     table.insertOrUpdate(this);
-    log.info(String.format("Saving Ref: %s, %s, %s", project, ref, commit));
   }
 
   public void delete() {
-    log.info(String.format("Deleting Ref: %s, %s", project, ref));
+    log.debug(String.format("Deleting Ref: %s, %s", project, ref));
     table.delete(this);
   }
 

src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Usage.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Usage.java b/src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Usage.java
index 5ca49a4..48bb2df 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Usage.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/repositoryuse/Usage.java
@@ -96,15 +96,15 @@
 
   public void save() {
     lastUpdated = new Date();
-    table.insertOrUpdate(this);
-    log.info(String.format("Saving Usage: %s, %s, %s, %s", project, branch,
+    log.debug(String.format("Saving Usage: %s, %s, %s, %s", project, branch,
         destination, ref));
+    table.insertOrUpdate(this);
   }
 
   public void delete() {
-    table.delete(this);
-    log.info(String.format("Deleting Usage: %s, %s, %s", project, branch,
+    log.debug(String.format("Deleting Usage: %s, %s, %s", project, branch,
         destination));
+    table.delete(this);
   }
 
   public static List<Usage> fetchByProject(String project) {
@@ -120,8 +120,8 @@
   }
 
   public static void deleteByBranch(String project, String branch) {
+    log.debug(String.format("Deleting all uses: %s, %s", project, branch));
     table.deleteByBranch(project, branch);
-    log.info(String.format("Deleting all uses: %s, %s", project, branch));
   }
 
   static class Table {