Fix return types in vastai_base.py

vastai/vast.py

@@ -2440,6 +2440,7 @@ def create_instance(id, args):
         print("request json: ")
         print(json_blob)
     r.raise_for_status()
+
     if args.raw:
         return r
     else:
@@ -2519,7 +2520,7 @@ def create__instance(args: argparse.Namespace):
 
     :param argparse.Namespace args: Namespace with many fields relevant to the endpoint.
     """
-    create_instance(args.id, args)
+    return create_instance(args.id, args)
 
 @parser.command(
     argument("ids", help="ids of instance types to launch (returned from search offers)", type=int, nargs='+'),
@@ -3112,7 +3113,7 @@ def destroy__instance(args):
 
     :param argparse.Namespace args: should supply all the command-line options
     """
-    destroy_instance(args.id,args)
+    return destroy_instance(args.id,args)
 
 @parser.command(
     argument("ids", help="ids of instance to destroy", type=int, nargs='+'),
@@ -3923,7 +3924,7 @@ def start__instance(args):
     :param argparse.Namespace args: should supply all the command-line options
     :rtype:
     """
-    start_instance(args.id,args)
+    return start_instance(args.id,args)
 
 
 @parser.command(
@@ -3989,7 +3990,7 @@ def stop__instance(args):
     :param argparse.Namespace args: should supply all the command-line options
     :rtype:
     """
-    stop_instance(args.id,args)
+    return stop_instance(args.id,args)
 
 @parser.command(
     argument("ids", help="ids of instance to stop", type=int, nargs='+'),
@@ -7195,7 +7196,7 @@ def cleanup__machine(args):
     :param argparse.Namespace args: should supply all the command-line options
     :rtype:
     """
-    cleanup_machine(args, args.id)
+    return cleanup_machine(args, args.id)
 
 
 @parser.command(