fixup! software-testing: install tested egg via software buildout

software/slapos-testing/buildout.hash.cfg

@@ -16,5 +16,5 @@
 
 [template]
 filename = instance.cfg
-md5sum = d1eea2e49a5ecd119d3f686a1af823a9
+md5sum = eb507f236360f47b5efcc4c2011a002d
 

software/slapos-testing/instance.cfg

@@ -39,7 +39,7 @@ test-list =
   $${slapos.recipe.template:location}
   $${slapos.toolbox:location}
 prepend-path = ${curl:location}/bin:${openssl:location}/bin:${git:location}/bin:${libxslt:location}/bin:${python2.7:location}/bin
-interpreter = ${egg:interpreter}
+interpreter = ${eggs:interpreter}
 
 [phantomjs-wrapper]
 recipe = slapos.cookbook:wrapper