Minor optimizations for standalone runner

Author: frikky

shuffle-tools/1.2.0/requirements.txt

@@ -8,3 +8,4 @@ json2xml==5.0.5
 ipaddress==1.0.23
 google.auth==2.37.0
 paramiko==3.5.0
+shuffle-sdk==0.0.6

shuffle-tools/1.2.0/src/app.py

@@ -41,8 +41,8 @@
 import concurrent.futures
 import multiprocessing
 
-from walkoff_app_sdk.app_base import AppBase
-#from shuffle_sdk import AppBase
+#from walkoff_app_sdk.app_base import AppBase
+from shuffle_sdk import AppBase
 
 # Override exit(), sys.exit, and os._exit 
 # sys.exit() can be caught, meaning we can have a custom handler for it