Referencing camel endpoint defined in the ‘blueprint’ XML does not appears to work

In previous camel projects (deployed to Tomcat) I used the <camel:endpoint>
to define endpoints and reference these from Routes in DSL.
I am now experimenting with karaf & Fuse and using the ‘blueprint’ XML file
with ‘camel:endpoint’ does not appear to work.
The XMLs at the end of this message show the blueprint that failed and the
Spring XML that works.

Notes
I used the maven archetype blueprint and spring to generate the deployment
jar

I am mainly interested in implementing the routes using DSL and defining
the ‘camel endpoint’ in the XML file.

Any information on how to define camel endpoint using blueprint will be
great.

----------------------------- blueprint

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:camel="http://camel.apache.org/schema/blueprint"
xsi:schemaLocation="
http://www.osgi.org/xmlns/blueprint/v1.0.0
http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
http://camel.apache.org/schema/blueprint
http://camel.apache.org/schema/blueprint/camel-blueprint.xsd">

<bean id="helloBean" class="com.blss.test.AsTest03.HelloBean">
<property name="say" value="Hi from Camel"/>
</bean>

<camel:endpoint id="timerX" uri="timer:foo?period=5000"/>

<camelContext id="blueprintContext" trace="false"
xmlns="http://camel.apache.org/schema/blueprint">
<route id="timerToLog">
<from ref="timerX"/>
<setBody>
<method ref="helloBean" method="hello"/>
</setBody>
<log message="The message contains ${body}"/>
<to uri="mock:result"/>
</route>
</camelContext>

</blueprint>

------------------------------------- Spring works OK

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:camel="http://camel.apache.org/schema/spring"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://camel.apache.org/schema/spring
http://camel.apache.org/schema/spring/camel-spring.xsd">

<bean id="helloBean" class="com.blss.test.AsTest04.HelloBean">
<property name="say" value="Hi from Camel"/>
</bean>

<camel:endpoint id="timerX" uri="timer:foo?period=5000"/>

<camel:camelContext xmlns="http://camel.apache.org/schema/spring">

<route id="timerToLog">
<from ref="timerX"/>
<setBody>
<method ref="helloBean" method="hello"/>
</setBody>
<log message="The message contains ${body}"/>
<to uri="mock:result"/>
</route>

</camel:camelContext>

</beans>