New osc SR to build OBS packages

For the moment, it's only used for re6st-node.

software/osc/osc.patch

+--- osc-0.182.0/setup.py	2022-09-08 14:35:07.000000000 +0200
++++ osc-0.182.0/setup.py	2023-09-10 21:02:44.026954574 +0200
+@@ -102,7 +102,6 @@
+     download_url='https://github.com/openSUSE/osc',
+     packages=['osc', 'osc.util'],
+     scripts=['osc-wrapper.py'],
+-    data_files=data_files,
+     install_requires=['M2Crypto'],
+     classifiers=[
+         "Development Status :: 5 - Production/Stable",

software/osc/software.cfg

+[buildout]
+extends =
+   ../../stack/slapos.cfg
+   ../../component/m2crypto/buildout.cfg
+parts = osc
+
+[python]
+part = python2.7
+
+[osc]
+recipe = zc.recipe.egg
+eggs =
+  ${M2Crypto:egg}
+  osc
+  docutils
+  python-debian
+interpreter = py
+patch-options = -p1
+osc-patches = ${:_profile_base_location_}/osc.patch#b818ac2e8919860f4cefb2aad0f1e3f7
+scripts =
+  osc-wrapper.py=osc
+  rst2man.py=rst2man
+
+[versions]
+M2Crypto = 0.39.0
+python-debian = 0.1.39
+osc = 0.182.0
+docutils = 0.20.1
+typing = 3.10.0.0