Pin versions of essential packages

In essence, Robot Framework packages and buildout-related packages,
including `setuptools` as a dependency of `zc.buildout`.

@@ -48,7 +48,13 @@ robot_tests.broker.smarttender  = git ${remotes:gh}openprocurement/robot_tests.b
 
 [versions]
 fake-factory = 0.5.3
+mr.developer = 1.34
 restkit = 4.2.2.op1
 rfc6266 = 0.0.6.op1
 robotframework = 3.0.0
+robotframework-debuglibrary = 0.8
+robotframework-lint = 0.7
 robotframework-selenium2library = 1.7.4
+setuptools = 18.3.2
+zc.buildout = 2.5.3
+zc.recipe.egg = 2.0.3