add toString()s to DialectResolutionInfo

to fix an ugly log message

hibernate-core/src/main/java/org/hibernate/engine/jdbc/dialect/spi/DatabaseMetaDataDialectResolutionInfoAdapter.java

@@ -102,4 +102,9 @@ public class DatabaseMetaDataDialectResolutionInfoAdapter implements DialectReso
 	public DatabaseMetaData getDatabaseMetadata() {
 		return databaseMetaData;
 	}
+
+	@Override
+	public String toString() {
+		return getMajor() + "." + getMinor();
+	}
 }

hibernate-core/src/main/java/org/hibernate/engine/jdbc/env/internal/JdbcEnvironmentInitiator.java

@@ -500,5 +500,10 @@ public class JdbcEnvironmentInitiator implements StandardServiceInitiator<JdbcEn
 		public DatabaseMetaData getDatabaseMetadata() {
 			return databaseMetadata;
 		}
+
+		@Override
+		public String toString() {
+			return getMajor() + "." + getMinor();
+		}
 	}
 }

hibernate-core/src/test/java/org/hibernate/orm/test/dialect/resolver/TestingDialectResolutionInfo.java

@@ -101,4 +101,9 @@ public class TestingDialectResolutionInfo implements DialectResolutionInfo {
 	public String getSQLKeywords() {
 		return "";
 	}
+
+	@Override
+	public String toString() {
+		return getMajor() + "." + getMinor();
+	}
 }