Need to exclude aopalliance JAR because kernel deploys it centrally:

kernel/deploy/shared/pom.xml
104- <artifactId>hsqldb</artifactId>
105- <scope>compile</scope>
106- </dependency>
107- <dependency>
108: <groupId>aopalliance</groupId>
109: <artifactId>aopalliance</artifactId>
110- <version>1.0</version>
111- <scope>compile</scope>
112- </dependency>
113- <dependency>