Synchronize on BMAS enpoint with a path (e.g. `/bma`)

Yunohost Duniter package deploy BMAS on path /bma. Such endpoints seems to be not used by sync command

added D-medium M-bma M-sync labels

mentioned in commit 32d44689

mentioned in merge request !1432 (closed)

mentioned in commit 9d4633cd

mentioned in commit 7b79c56f