fix pax-web https detection

Hi,

I'm trying to remove the 8181 port and to only use the 8443. I overwrite in my profile the pax web conf: 
```
org.osgi.service.http.enabled=false
org.osgi.service.http.secure.enabled = true
org.ops4j.pax.web.config.url=profile:jetty-ssl.xml
org.ops4j.pax.web.config.checksum=${checksum:profile\:jetty-ssl.xml}
in my jetty-ssl.xml file I setup my specific connector/factory
```
It mostly work apart that some URL which have an http scheme instead of https. For instance, in hawtio, I can see: git clone -b 1.0 http://admin:admin@192.168.1.23:8443/git/fabric

After discussion with @jstrachan, we discovered the problem witch is fixed by this pull request.

Best,
Jerome