wendelin.core: v↑ 2.0.alpha3..post9 -> 2.0.alpha3.post22

wendelin.core 2.0.alpha3.post22 supports being installed by newest
version of pip/setuptools

See !1602 (comment 212191)

component/wendelin.core/buildout.cfg

@@ -50,7 +50,7 @@ CGO_LDFLAGS += -Wl,-rpath=${zlib:location}/lib
 recipe  = slapos.recipe.build:gitclone
 repository = https://lab.nexedi.com/nexedi/wendelin.core.git
 branch   = master
-revision = wendelin.core-2.0.alpha3-9-gda765ef
+revision = wendelin.core-2.0.alpha3-22-g07087ec8
 # dir is pretty name as top-level recipe
 location = ${buildout:parts-directory}/wendelin.core
 git-executable = ${git:location}/bin/git