Fix duplicated classes in nuxeo dependency (for studio 6.0 upgrade)

+- org.nuxeo.ecm.distribution:nuxeo-functional-tests:jar:7.3-SNAPSHOT:compile
[INFO] |  +- commons-io:commons-io:jar:2.4:compile
[INFO] |  +- org.seleniumhq.selenium:selenium-api:jar:2.39.0:compile
[INFO] |  +- org.seleniumhq.selenium:selenium-support:jar:2.39.0:compile
[INFO] |  +- org.seleniumhq.selenium:selenium-firefox-driver:jar:2.39.0:compile
[INFO] |  |  +- org.seleniumhq.selenium:selenium-remote-driver:jar:2.39.0:compile
[INFO] |  |  |  \- cglib:cglib-nodep:jar:2.2:compile
[INFO] |  |  \- org.apache.commons:commons-exec:jar:1.1:compile
[INFO] |  +- org.seleniumhq.selenium:selenium-ie-driver:jar:2.39.0:compile
[INFO] |  |  +- net.java.dev.jna:jna:jar:3.4.0:compile
[INFO] |  |  \- net.java.dev.jna:platform:jar:3.4.0:compile
[INFO] |  +- org.seleniumhq.selenium:selenium-chrome-driver:jar:2.39.0:compile
[INFO] |  +- org.seleniumhq.selenium:selenium-htmlunit-driver:jar:2.39.0:compile
[INFO] |  |  \- net.sourceforge.htmlunit:htmlunit:jar:2.8:compile
[INFO] |  |     +- xalan:xalan:jar:2.7.1:compile
[INFO] |  |     |  \- xalan:serializer:jar:2.7.1:compile
[INFO] |  |     +- org.apache.httpcomponents:httpmime:jar:4.3.3:compile
[INFO] |  |     +- net.sourceforge.htmlunit:htmlunit-core-js:jar:2.8:compile
[INFO] |  |     \- net.sourceforge.cssparser:cssparser:jar:0.9.5:compile
[INFO] |  |        \- org.w3c.css:sac:jar:1.3:compile
[INFO] |  +- firebug:firebug:xpi:1.6.2-fx:compile
[INFO] |  +- biz.neustar:browsermob-proxy:jar:2.0-beta-6:compile
[INFO] |  |  +- com.google.sitebricks:sitebricks:jar:0.8.3:compile
[INFO] |  |  |  +- com.intellij:annotations:jar:7.0.3:compile
[INFO] |  |  |  +- jaxen:jaxen:jar:1.1.1:compile
[INFO] |  |  |  |  \- jdom:jdom:jar:1.0:compile
[INFO] |  |  |  +- saxpath:saxpath:jar:1.0-FCS:compile
[INFO] |  |  |  \- org.jsoup:jsoup:jar:1.4.1:compile
[INFO] |  |  +- com.google.inject.extensions:guice-multibindings:jar:3.0:compile
[INFO] |  |  +- org.apache.commons:commons-io:jar:1.3.2:compile