SSL enabled camel jaxrs route does not work in JBoss Fuse 6.1

Issue

I have a camel jaxrs route:

<camelContext id="myJaxrsContext" xmlns="http://camel.apache.org/schema/blueprint">
    <route id="my-jaxrs-route">
        <from uri="cxfrs://bean://rsServer"/>
        <process ref="MyJaxRsProcessor"/>
        <to uri="cxfrs://bean://rsClient"/>
    </route>
</camelContext>

both camel jaxrs consumer and producer endpoints have SSL enabled in the blueprint configuration through <httpj:engine-factory> and <http:conduit>:

<cxf:rsServer id="rsServer"
              address="https://${server.host}:${server.port}/"
              serviceClass="xx.xx.xx.xx.MyService"
              loggingFeatureEnabled="true">
    <cxf:inInterceptors>
        <bean class="xx.xx.xx.xx.MySecurityInterceptor"/>
    </cxf:inInterceptors>
</cxf:rsServer>

<cxf:rsClient id="rsClient"
              address="https://${client.host}:${client.port}/"
              serviceClass="xx.xx.xx.xx.MyService"
              loggingFeatureEnabled="true"/>

Unfortunately, it does not work in JBoss Fuse 6.1 GA as it failed to find valid certification path with following error:

sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target