software/kvm: Switch to python3 only

There is no reason to keep python2 compatibility, as python3 flavour of the
KVM software release is good enough.

software/kvm/software-py3.cfg

-[buildout]
-extends =
-  software.cfg
-
-[python]
-part = python3

software/kvm/software.cfg

@@ -40,6 +40,9 @@ parts = ${:common-parts}
 
 #XXX-Cedric : add list of keyboard layouts (azerty/us querty/...) parameter to qemu
 
+[python]
+part = python3
+
 [python-with-eggs]
 recipe = zc.recipe.egg
 interpreter = ${:_buildout_section_name_}

software/slapos-sr-testing/software-py3.cfg

@@ -19,6 +19,7 @@ extra =
   helloworld ${slapos.test.helloworld-setup:setup}
   hugo ${slapos.test.hugo-setup:setup}
   jupyter ${slapos.test.jupyter-setup:setup}
+  kvm ${slapos.test.kvm-setup:setup}
   matomo ${slapos.test.matomo-setup:setup}
   monitor ${slapos.test.monitor-setup:setup}
   nextcloud ${slapos.test.nextcloud-setup:setup}

software/slapos-sr-testing/software.cfg

@@ -350,7 +350,6 @@ tests =
 # here, to check there's no promise issue when slapos node runs with Python 2.
   erp5 ${slapos.test.erp5-setup:setup}
   fluentd ${slapos.test.fluentd-setup:setup}
-  kvm ${slapos.test.kvm-setup:setup}
   metabase ${slapos.test.metabase-setup:setup}
 ###
   ${:extra}