Change logging level to INFO

This commit changes the default logging level from DEBUG to INFO for
all of the metabase logging categories. Logging often includes
pretty-printing strings which can be costly from a performance
perspective. Users wanting more verbose logging and override these
settings with the -Dlog4j.configuration parameter.

resources/log4j.properties

@@ -17,13 +17,13 @@ log4j.appender.file.layout.ConversionPattern=%d [%t] %-5p%c - %m%n
 log4j.appender.metabase=metabase.logger.Appender
 
 # customizations to logging by package
-log4j.logger.metabase.driver=DEBUG
-log4j.logger.metabase.middleware=DEBUG
-log4j.logger.metabase.models.permissions=DEBUG
-log4j.logger.metabase.query-processor.permissions=DEBUG
-log4j.logger.metabase.query-processor=DEBUG
+log4j.logger.metabase.driver=INFO
+log4j.logger.metabase.middleware=INFO
+log4j.logger.metabase.models.permissions=INFO
+log4j.logger.metabase.query-processor.permissions=INFO
+log4j.logger.metabase.query-processor=INFO
 log4j.logger.metabase.sync=DEBUG
-log4j.logger.metabase.models.field-values=DEBUG
+log4j.logger.metabase.models.field-values=INFO
 log4j.logger.metabase=INFO
 # c3p0 connection pools tend to log useless warnings way too often; only log actual errors
 log4j.logger.com.mchange=ERROR