Keep original pathes of source files

We are migrating service client code from Tempest, and we need to
migrate files under different pathes in a single patch.
However, current migrating script handles them as the same path and
we could not use the script for the migration.
This patch changes the script for keeping original pathes of source
files.

Change-Id: Id42692aea4b7e132f49dbfe9a0a6551fa2a56770

tools/migrate_from_tempest.sh

@@ -66,11 +66,13 @@ cd -
 file_list=''
 for file in $files; do
     filename=`basename $file`
+    dirname=`dirname $file`
     if [ -n "$output_dir" ]; then
-        dest_file="$output_dir/$filename"
+        dirname="$output_dir"
     else
-        dest_file="tempest_lib/$filename"
+        dirname=`echo $dirname | sed s@tempest\/@tempest_lib/\@`
     fi
+    dest_file="$dirname/$filename"
     cp -r "$tmpdir/$file" "$dest_file"
     git add "$dest_file"
     if [[ -z "$file_list" ]]; then