Accepting request 901312 from home:dimstar:Factory

- Switch back to using tar_scm in _service file: with aaa_base
  being part of the distro bootstrap (ring0) we want to have the
  build deps as lean as possible. Buildtime services equals to
  build deps.

OBS-URL: https://build.opensuse.org/request/show/901312
OBS-URL: https://build.opensuse.org/package/show/Base:System/aaa_base?expand=0&rev=726

_service

@@ -1,5 +1,5 @@
 <services>
-  <service name="obs_scm" mode="manual">
+  <service name="tar_scm" mode="manual">
     <param name="version">84.87</param>
     <param name="versionformat">84.87+git%cd.%h</param>
     <param name="url">https://github.com/openSUSE/aaa_base.git</param>
@@ -7,6 +7,4 @@
     <param name="changesgenerate">enable</param>
   </service>
   <service name="set_version" mode="manual"/>
-  <service mode="buildtime" name="tar"/>
-  <service mode="buildtime" name="set_version"/>
 </services>