Summary: Reporting a warning when a custom thumbnail not found is verbose #181

Context: Reporting a warning when a custom thumbnail not found 404 is verbose and results in excessive logging in catalina.out.
Change: Change the logging level from WARN to INFO for the hasThumbnail() method of the DataPackageManagerClient class and set a specific log4j entry to set logging for this class to WARN or more severe for production and staging DataPortals.

Author: servilla

src/edu/lternet/pasta/client/DataPackageManagerClient.java

@@ -2357,7 +2357,7 @@ public boolean hasThumbnail(String scope, String identifier, String revision, St
             if (statusCode == HttpStatus.SC_OK) {
                 hasThumbnail = true;
             } else {
-                logger.warn(entityString);
+                logger.info(entityString);
             }
         } catch (Exception e) {
             logger.error(e.getMessage());