treewide: move build helper to more fitting places

Change-Id: I3d0cfe9283222d403ae369ec9db09201ad511e15
Reviewed-on: https://review.monogon.dev/c/monogon/+/3327
Reviewed-by: Serge Bazanski <serge@monogon.tech>
Tested-by: Jenkins CI
diff --git a/build/static_binary_tarball/def.bzl b/build/static_binary_tarball/def.bzl
index 9826f31..b23f4e0 100644
--- a/build/static_binary_tarball/def.bzl
+++ b/build/static_binary_tarball/def.bzl
@@ -14,7 +14,7 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 
-load("//metropolis/node/build:def.bzl", "build_static_transition")
+load("//osbase/build:def.bzl", "build_static_transition")
 
 def _static_binary_tarball_impl(ctx):
     layer_spec = ctx.actions.declare_file(ctx.label.name + ".prototxt")