Restore Removed Throws Clauses

In a recent clean-up, certain exceptions were removed from various
throws clauses.

This PR re-introduces throws clauses that are important for one of the
following reasons:

1. It's a method on a public interface
2. It's a method clearly designed for inheritance, for example, a
method stub, an abstract method, or indicated as such in the docs.

Fixes gh-7541

core/src/main/java/org/springframework/security/authentication/dao/AbstractUserDetailsAuthenticationProvider.java

@@ -228,7 +228,7 @@ public abstract class AbstractUserDetailsAuthenticationProvider implements
 		return result;
 	}
 
-	protected void doAfterPropertiesSet() {
+	protected void doAfterPropertiesSet() throws Exception {
 	}
 
 	public UserCache getUserCache() {

core/src/main/java/org/springframework/security/authentication/jaas/JaasAuthenticationCallbackHandler.java

@@ -16,9 +16,11 @@
 
 package org.springframework.security.authentication.jaas;
 
-import org.springframework.security.core.Authentication;
-
+import java.io.IOException;
 import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.UnsupportedCallbackException;
+
+import org.springframework.security.core.Authentication;
 
 /**
  * The JaasAuthenticationCallbackHandler is similar to the
@@ -58,5 +60,6 @@ public interface JaasAuthenticationCallbackHandler {
 	 * @param auth The Authentication object currently being authenticated.
 	 *
 	 */
-	void handle(Callback callback, Authentication auth);
+	void handle(Callback callback, Authentication auth) throws IOException,
+			UnsupportedCallbackException;
 }