Properly encode download package URI

harlans-MacBook-Pro:~ harlan$ ./nuxeo-cap-7.10-tomcat/bin/nuxeoctl mp-install assetserv-reference
Detected Tomcat server.
Nuxeo home:          /Users/harlan/nuxeo-cap-7.10-tomcat
Nuxeo configuration: /Users/harlan/nuxeo-cap-7.10-tomcat/bin/nuxeo.conf
Include template: /Users/harlan/nuxeo-cap-7.10-tomcat/templates/common-base
Include template: /Users/harlan/nuxeo-cap-7.10-tomcat/templates/common
Include template: /Users/harlan/nuxeo-cap-7.10-tomcat/templates/default

Dependency resolution:
  Installation order (1):        assetserv-reference-5.1.2-Reference Platform
  Unchanged packages (10):       nuxeo-7.10-HF05:1.0.0, nuxeo-7.10-HF06:1.0.0, nuxeo-7.10-HF07:1.0.0, nuxeo-7.10-HF08:1.0.0, nuxeo-7.10-HF09:1.0.0, nuxeo-dam:6.1.4, nuxeo-7.10-HF01:1.0.0, nuxeo-7.10-HF02:1.0.0, nuxeo-7.10-HF03:1.0.0, nuxeo-7.10-HF04:1.0.0
  Packages to download (1):      assetserv-reference:5.1.2-Reference Platform

Do you want to continue (yes/no)? [yes] 
Downloading [assetserv-reference-5.1.2-Reference Platform]...
Exception in thread "ConnectDownloadThread-1-1" java.lang.IllegalArgumentException: Invalid uri 'https://connect.nuxeo.com/nuxeo/studiopackage/assetserv-reference-5.1.2-Reference Platform': escaped absolute path not valid
        at org.apache.commons.httpclient.HttpMethodBase.<init>(HttpMethodBase.java:222)
        at org.apache.commons.httpclient.methods.GetMethod.<init>(GetMethod.java:89)
        at org.nuxeo.connect.downloads.LocalDownloadingPackage.run(LocalDownloadingPackage.java:134)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)