Add whitespace after copyright header

Add an additional lines after the copyright header and before the
`package` declaration. This aligns with the style used by Spring
Framework.

Issue gh-8945

ldap/src/test/java/org/springframework/security/ldap/SpringSecurityAuthenticationSourceTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap;
 
 import org.junit.After;

ldap/src/test/java/org/springframework/security/ldap/SpringSecurityLdapTemplateTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap;
 
 import javax.naming.NamingEnumeration;

ldap/src/test/java/org/springframework/security/ldap/authentication/ad/ActiveDirectoryLdapAuthenticationProviderTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.authentication.ad;
 
 import java.util.Collections;

ldap/src/test/java/org/springframework/security/ldap/ppolicy/OpenLDAPIntegrationTestSuite.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.ppolicy;
 
 /**

ldap/src/test/java/org/springframework/security/ldap/ppolicy/PasswordPolicyAwareContextSourceTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.ppolicy;
 
 import java.util.Hashtable;

ldap/src/test/java/org/springframework/security/ldap/ppolicy/PasswordPolicyControlFactoryTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.ppolicy;
 
 import javax.naming.ldap.Control;

ldap/src/test/java/org/springframework/security/ldap/userdetails/InetOrgPersonTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.userdetails;
 
 import java.util.HashSet;

ldap/src/test/java/org/springframework/security/ldap/userdetails/LdapAuthorityTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.userdetails;
 
 import java.util.Arrays;

ldap/src/test/java/org/springframework/security/ldap/userdetails/LdapUserDetailsImplTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.userdetails;
 
 import org.junit.Test;

ldap/src/test/java/org/springframework/security/ldap/userdetails/LdapUserDetailsServiceTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.userdetails;
 
 import java.util.Collection;

ldap/src/test/java/org/springframework/security/ldap/userdetails/UserDetailsServiceLdapAuthoritiesPopulatorTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.security.ldap.userdetails;
 
 import java.util.Collection;