change selenium to use opera instead of chrome

software/selenium/software.cfg

@@ -5,7 +5,7 @@ extends =
    ../../component/xorg/buildout.cfg
    ../../component/lxml-python/buildout.cfg
    ../../component/python-2.7/buildout.cfg
-   ../../component/chromium/buildout.cfg
+   ../../component/opera/buildout.cfg
    ../../stack/shacache-client.cfg
 
 versions = versions
@@ -27,11 +27,10 @@ find-links +=
 
 parts =
    template
-   libxslt
    eggs
    instance-recipe-egg
    xserver
-   xkbcomp
+   opera
 
 versions = versions
 
@@ -62,5 +61,3 @@ mode = 0644
 [versions]
 # Use SlapOS patched zc.buildout
 zc.buildout = 1.5.3-dev-SlapOS-010
-
-lxml = 2.3