Steps to reproduce:

• mkdir -p /tmp/junit1027500935389679949
• ./jboss-eap-installation-manager.sh install --dir=/tmp/tmpDistribution --profile=eap-8.1 --repositories=file:///tmp/junit1027500935389679949/
• Check output:

  Installing profile: eap-8.1
  Using channels:
  # eap-8.1
    manifest: org.jboss.eap.channels:eap-8.1
    repositories:
      id: temp-repo-0
      url: file:/tmp/junit1027500935389679949/
  
  ERROR: Unable to resolve required channel metadata:
    * org.jboss.eap.channels:eap-8.1:manifest:yaml
   Attempted repositories:
    *temp-repo-0::file:/tmp/junit1027500935389679949/
  

Prospero currupts original proper url "file:///tmp/junit1027500935389679949/" to non-valid URL "file:/tmp/junit1027500935389679949/", see RFC1738, cc jkasik@redhat.com