*: prepare for next slapos.core version

slapos.core now depends on PyYAML and jsonschema

software/slapos-sr-testing/software.cfg

@@ -234,6 +234,7 @@ setup = ${slapos.core-repository:location}
 eggs += ${:extra-eggs}
 extra-eggs =
   ${lxml-python:egg}
+  ${python-PyYAML:egg}
   ${slapos.core-setup:egg}
   ${pillow-python:egg}
   ${pycurl:egg}

software/slapos-testing/software.cfg

@@ -115,6 +115,7 @@ setup = ${rubygemsrecipe-repository:location}
 <= python-interpreter
 eggs +=
   ${lxml-python:egg}
+  ${python-PyYAML:egg}
   ${python-cryptography:egg}
   ${backports.lzma:egg}
   ${pycurl:egg}

stack/slapos.cfg

@@ -125,6 +125,7 @@ eggs =
 recipe = zc.recipe.egg
 eggs =
   ${lxml-python:egg}
+  ${python-PyYAML:egg}
   slapos.core
   slapos.libnetworkcache