slapos-sr-testing: Provide test runner

nose is a well working test runnner, which allows developer more control
over the running tests.

software/slapos-sr-testing/software.cfg

@@ -424,11 +424,15 @@ interpreter = python_for_test
 
 [eggs/scripts]
 recipe = zc.recipe.egg
-eggs = ${python-interpreter:eggs}
+eggs =
+  ${python-interpreter:eggs}
+  nose
+  ipdbplugin
 scripts =
   slapos
   supervisord
   caucase
+  nosetests
 
 [git-clone-repository]
 recipe = slapos.recipe.build:gitclone
@@ -531,3 +535,5 @@ mysqlclient = 2.1.1
 paho-mqtt = 1.5.0
 pcpp = 1.30
 xmltodict = 0.13.0
+nose = 1.3.7
+ipdbplugin = 1.5.0