software/slapos-sr-testing: use an unreleased python-plantuml supporting python3

software/slapos-sr-testing/software.cfg

@@ -121,6 +121,7 @@ setup = ${slapos.core-repository:location}
 [eggs]
 recipe = zc.recipe.egg
 eggs =
+  ${plantuml-develop:egg}
   ${lxml-python:egg}
   ${slapos.core-setup:egg}
   ${pillow-python:egg}
@@ -172,6 +173,17 @@ url = ${:_profile_base_location_}/${:filename}
 output = ${buildout:directory}/template.cfg
 mode = 640
 
+[plantuml-repository]
+<= git-clone-repository
+repository = https://github.com/dougn/python-plantuml.git
+revision = bb5407e87aabbac9e8baef5a6726b03f72afca16
+
+[plantuml-develop]
+recipe = zc.recipe.egg:develop
+egg = plantuml
+setup = ${plantuml-repository:location}
+
+
 [versions]
 # slapos.core is used from the clone always
 slapos.core =