Add pax-url-classpath as a default installed feature on Fuse 7.x

Some customers use pax-url-classpath on Fuse 6.x, to load resources on our OSGi blueprint based Camel apps.

But this feature is not presented on Fuse 7.x, so, when customer migrates, he has to install this feature by hand

It could be installed by hand, this way:

<feature name="pax-url-classpath" resolver="(obr)">
<bundle start-level="30" dependency="true">mvn:org.ops4j.base/ops4j-base-util-property/1.5.0</bundle>
<bundle start-level="30" dependency="true">mvn:org.ops4j.base/ops4j-base-lang/1.5.0</bundle>
<bundle start-level="30" dependency="true">mvn:org.ops4j.pax.swissbox/pax-swissbox-core/1.8.2</bundle>
<bundle start-level="30" dependency="true">mvn:org.ops4j.pax.swissbox/pax-swissbox-property/1.8.2</bundle>
<bundle start-level="30" dependency="true">mvn:org.ops4j.pax.url/pax-url-commons/${version to match other pax-url bundle version in FUSE 7.x}</bundle>
<bundle start-level="30">mvn:org.ops4j.pax.url/pax-url-classpath/${version to match other pax-url bundle version in FUSE 7.x}</bundle>
</feature>