Refactor: Faster device retrying

module/device/method/utils.py

@@ -86,6 +86,21 @@ class PackageNotInstalled(Exception):
     pass
 
 
+def retry_sleep(trial):
+    # First trial
+    if trial == 0:
+        pass
+    # Failed once, fast retry
+    elif trial == 1:
+        pass
+    # Failed twice
+    elif trial == 2:
+        time.sleep(1)
+    # Failed more
+    else:
+        time.sleep(RETRY_DELAY)
+
+
 def handle_adb_error(e):
     """
     Args: