Jupyter: Change section name to instance-jupyter so as not to raise conflict...

Jupyter: Change section name to instance-jupyter so as not to raise conflict in case of multiple extends

/reviewed-by @kirr  (on nexedi/slapos!33)

software/ipython_notebook/software.cfg

@@ -12,7 +12,7 @@ parts =
   monitor-eggs
   slapos-cookbook
   ipython-notebook
-  instance
+  instance-jupyter
 
 [ipython-notebook]
 ; In the ipython notebook software, we use more eggs than in the minimal
@@ -55,7 +55,7 @@ md5sum = ab6e78ea20855e07d388b5b86d1770fe
 filename = custom.js.jinja
 md5sum = 0e8262d04a6dafbc1b77d95aea2192bc
 
-[instance]
+[instance-jupyter]
 recipe = slapos.recipe.template:jinja2
 template = ${:_profile_base_location_}/instance.cfg.in
 rendered = ${buildout:directory}/template.cfg