Update org.apache.karaf.services.coordinator in subsystem feature

[Philipp Marx <sm...@googlemail.com>]

Hi,

I have noticed that the subsystem feature [1] contains
the org.apache.karaf.services.coordinator/4.x which references
org.eclipse.equinox.coordinator
[2] which is dated back to 2012. In the transaction and jpa feature the
newer up-to-date felix version [3] is being used.

The version at [2] is a little buggy from what I have seen. I experienced a
lot of concurrency issues when using it as well as an issue related to the
embedding of the jar [4]. Should this reference be updated to the felix
version or is there any particular reason for subsystems to use the equinox
version?

Cheers,
Philipp

[1]
https://github.com/apache/karaf/blob/master/assemblies/features/enterprise/src/main/feature/feature.xml
[2]
http://mvnrepository.com/artifact/org.eclipse.equinox/org.eclipse.equinox.coordinator/1.1.0.v20120522-1841
[3]
http://mvnrepository.com/artifact/org.apache.felix/org.apache.felix.coordinator/1.0.2
[4] https://issues.apache.org/jira/browse/KARAF-4611