test/: PEP8 compliancy (#24803)

* test/: PEP8 compliancy

- Make PEP8 compliant

* Python3 chokes on casting int to bytes (#24952)

But if we tell the formatter that the var is a number, it works

test/integration/setup_gce.py

@@ -7,19 +7,22 @@ ${prefix}-snapshot. prefix will be forced to lowercase, to ensure the names are
 legal GCE resource names.
 '''
 
-import sys
-import optparse
-
 import gce_credentials
+import optparse
+import sys
 
 
 def parse_args():
     parser = optparse.OptionParser(
-        usage="%s [options] <prefix>" % (sys.argv[0],), description=__doc__)
+        usage="%s [options] <prefix>" % (sys.argv[0],), description=__doc__
+    )
     gce_credentials.add_credentials_options(parser)
-    parser.add_option("--prefix",
-        action="store", dest="prefix",
-        help="String used to prefix GCE resource names (default: %default)")
+    parser.add_option(
+        "--prefix",
+        action="store",
+        dest="prefix",
+        help="String used to prefix GCE resource names (default: %default)"
+    )
 
     (opts, args) = parser.parse_args()
     gce_credentials.check_required(opts, parser)
@@ -27,6 +30,7 @@ def parse_args():
         parser.error("Missing required argument: name prefix")
     return (opts, args)
 
+
 if __name__ == '__main__':
 
     (opts, args) = parse_args()
@@ -34,9 +38,8 @@ if __name__ == '__main__':
     prefix = args[0].lower()
     try:
         base_volume = gce.create_volume(
-            size=10, name=prefix+'-base', location='us-central1-a')
-        gce.create_volume_snapshot(base_volume, name=prefix+'-snapshot')
-        gce.create_volume(
-            size=10, name=prefix+'-extra', location='us-central1-a')
+            size=10, name=prefix + '-base', location='us-central1-a')
+        gce.create_volume_snapshot(base_volume, name=prefix + '-snapshot')
+        gce.create_volume(size=10, name=prefix + '-extra', location='us-central1-a')
     except KeyboardInterrupt as e:
         print("\nExiting on user command.")