Added logging to coerceValueForSchema for when recursively trying.

Author: Erin

schemas-core/src/main/java/org/cedar/schemas/avro/util/AvroUtils.java

@@ -165,6 +165,7 @@ public static Object coerceValueForSchema(Object value, Schema schema) {
         break;
 
       case UNION:
+        log.debug("Recursively trying to coerce the value into one of these schemas types: "+schema.getTypes());
         for (Schema type : schema.getTypes()) {
           try {
             return coerceValueForSchema(value, type);