I write an addition to JAX-RS and included the Java EE 6 API as a Maven dependency.
javax
Not sure this will solve your problem but GlassFish Embedded provides a Java EE 6 implementation. Add this to your pom.xml:
...
glassfish-extras-repository
http://download.java.net/maven/glassfish/org/glassfish/extras
...
org.glassfish.extras
glassfish-embedded-all
3.0.1
test
javax
javaee-api
6.0
provided
...
...
It's important to declare the glassfish-embedded-all artifact before the javaee-api.