Store repository id in git config for each repository

This is needed after migration from v1 to v2 and is done in
GitV1UpdateStep.java. Therefore we hat to make the 'forAllPaths' method
in PathBasedRepositoryLocationResolver available in the interface of
RepositoryLocationResolver.

scm-test/src/main/java/sonia/scm/TempDirRepositoryLocationResolver.java

@@ -4,6 +4,7 @@ import sonia.scm.repository.BasicRepositoryLocationResolver;
 
 import java.io.File;
 import java.nio.file.Path;
+import java.util.function.BiConsumer;
 
 public class TempDirRepositoryLocationResolver extends BasicRepositoryLocationResolver {
   private final File tempDirectory;
@@ -30,6 +31,11 @@ public class TempDirRepositoryLocationResolver extends BasicRepositoryLocationRe
       public void setLocation(String repositoryId, T location) {
         throw new UnsupportedOperationException("not implemented for tests");
       }
+
+      @Override
+      public void forAllLocations(BiConsumer<String, T> consumer) {
+        consumer.accept("id", (T) tempDirectory.toPath());
+      }
     };
   }
 }