add prog name to sync arg parser

lbry/wallet/server/cli.py

@@ -8,7 +8,7 @@ from lbry.wallet.server.server import Server
 
 def get_argument_parser():
     parser = argparse.ArgumentParser(
-        prog="hub"
+        prog="lbry-hub"
     )
     parser.add_argument("spvserver", type=str, help="Python class path to SPV server implementation.",
                         nargs="?", default="lbry.wallet.server.coin.LBC")

lbry/wallet/server/db/elasticsearch/sync.py

@@ -82,7 +82,7 @@ def __run(args, shard):
 def run_elastic_sync():
     logging.basicConfig(level=logging.INFO)
     logging.info('lbry.server starting')
-    parser = argparse.ArgumentParser()
+    parser = argparse.ArgumentParser(prog="lbry-hub-elastic-sync")
     parser.add_argument("db_path", type=str)
     parser.add_argument("-c", "--clients", type=int, default=16)
     parser.add_argument("-b", "--blocks", type=int, default=0)