Fixup: use only one file.

slapos/software/osie-coupler/software-modbus.cfg

@@ -2,7 +2,7 @@
 [buildout]
 allow-picked-versions = true
 extends =
-  buildout-modbus.hash.cfg
+  buildout.hash.cfg
   https://lab.nexedi.com/nexedi/slapos/raw/master/stack/monitor/buildout.cfg
   https://lab.nexedi.com/nexedi/slapos/raw/master/stack/slapos.cfg
   https://lab.nexedi.com/nexedi/slapos/raw/master/component/python3/buildout.cfg

slapos/software/osie-coupler/software-opc-ua.cfg

@@ -6,7 +6,7 @@ parts =
   instance-profile
 
 extends =
-  buildout-opc-ua.hash.cfg   
+  buildout.cfg
   https://lab.nexedi.com/nexedi/slapos/raw/master/stack/monitor/buildout.cfg
   https://lab.nexedi.com/nexedi/slapos/raw/master/stack/slapos.cfg
   https://lab.nexedi.com/nexedi/slapos/raw/master/component/cmake/buildout.cfg