#2080 - Refactor convert from sychronized to ReentrantLock

DatabaseFactory, DbPrimary, ScalarTypeArrayList etc

ebean-core/src/test/java/org/tests/model/basic/cache/TestCacheViaComplexNaturalKey.java

@@ -30,7 +30,7 @@ public class TestCacheViaComplexNaturalKey extends BaseTestCase {
     return server().getServerCacheManager();
   }
 
-  private static synchronized void insertSome() {
+  private static void insertSome() {
     if (!loadOnce) {
       Ebean.find(OCachedNatKeyBean.class).delete();
       for (String store : Arrays.asList("abc", "def")) {

ebean-core/src/test/java/org/tests/model/basic/cache/TestCacheViaComplexNaturalKey3.java

@@ -28,7 +28,7 @@ public class TestCacheViaComplexNaturalKey3 extends BaseTestCase {
     return server().getServerCacheManager();
   }
 
-  private static synchronized void insertSome() {
+  private static void insertSome() {
     if (!loadOnce) {
       Ebean.find(OCachedNatKeyBean3.class).delete();