[migration-tools] Copy bloom .ignored file if source distribution has…

… one. (ros#25477)

Somehow none of the repositories which had ignored packages tripped any
build alarms as I was using this script in testing. Support for ignored
files was added by checking if an ignored file is present for the source
distribution and if so, copy it to the dest distribution and commit the
change.

migration-tools/migrate-rosdistro.py

@@ -2,6 +2,7 @@
 import copy
 import os
 import os.path
+import shutil
 import subprocess
 import sys
 import tempfile
@@ -134,6 +135,14 @@ def write_tracks_file(tracks, commit_msg=None):
  subprocess.check_call(['git', 'remote', 'add', 'origin', new_release_repo_url])
 
  if args.source != args.dest:
+ # Copy a bloom .ignored file from source to target distro.
+ if os.path.isfile(f'{args.source}.ignored'):
+ shutil.copyfile(f'{args.source}.ignored', f'{args.dest}.ignored')
+ with open('.git/rosdistromigratecommitmsg', 'w') as f:
+ f.write(f'Propagate {args.source} ignore file to {args.dest}.')
+ subprocess.check_call(['git', 'add', f'{args.dest}.ignored'])
+ subprocess.check_call(['git', 'commit', '-F', '.git/rosdistromigratecommitmsg'])
+
  # Copy the source track to the new destination.
  dest_track = copy.deepcopy(tracks['tracks'][args.source])
  dest_track['ros_distro'] = args.dest