Merge pull request #6534 from vpavic:gh-6533

* pr/6534:
  Polish contribution
  Fix aliases for database names in `JdbcSessionDatabaseInitializer`

Author: snicoll

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/session/JdbcSessionDatabaseInitializer.java

@@ -42,7 +42,9 @@ public class JdbcSessionDatabaseInitializer {
 
 	static {
 		Map<String, String> aliases = new HashMap<String, String>();
-		aliases.put("hsql", "hsqldb");
+		aliases.put("apache derby", "derby");
+		aliases.put("hsql database engine", "hsqldb");
+		aliases.put("microsoft sql server", "sqlserver");
 		aliases.put("postgres", "postgresql");
 		ALIASES = Collections.unmodifiableMap(aliases);
 	}