Add ability to consume jboss-webservices.xml located in META-INF of EAR archive

Motivation from IRC chat:
<rsvoboda> asoldano, ping
<asoldano> rsvoboda, pong
<rsvoboda> asoldano, Hi Alessio, my colleague asked me if it's possible to add jboss-webservices.xml into META-INF in ear ... to avoid duplication in WEB-INF for more war archive ... I'm not sure we support this
<rsvoboda> asoldano, he is interested in https://docs.jboss.org/author/display/JBWS/Apache+CXF+integration#ApacheCXFintegration-WorkQueueconfiguration
<asoldano> rsvoboda, mmh... I think that's not going to work atm, but he can create a jira and we can evaluate feasibility
<rsvoboda> asoldano, ok, he did some experiments and properties defined in META-INF weren't propagated ... and I wasn't sure we even support it
<asoldano> rsvoboda, when we added the jboss-webservices.xml we didn't even think about ears

I think reflecting jboss-webservices.xml located in META-INF of EAR archive is "enterprise feature" we should consider.

There is open question what to do when warXY included in EAR contains jboss-webservices.xml too...

• accept only properties defined in jboss-webservices.xml from META-INF of EAR archive
• accept only properties defined in jboss-webservices.xml from WEB-INF of warXY archive
• merge properties defined in jboss-webservices.xml from both location (sub-archive jboss-webservices.xml overrides properties defined in EAR)