TommyLike 1a5910cbd8 Fix PY2/PY3 specific error in testcases ...

The behaviour of PY3's standard lib 'argparse'
differs from PY2's.

```
cinder extend 2
usage: cinder extend <volume> <new_size>
error: too few arguments
Try 'cinder help extend' for more information.

cinder extend 3
usage: cinder extend <volume> <new_size>
error: the following arguments are required: <new_size>
Try 'cinder help extend' for more information.

```
This could lead to the partly failure of functional testcase,
fix it.

Change-Id: I59e9ae149af0b4294b09a94a52a4bc86a1d90f2b
Closes-Bug: #1697428

2017-06-15 08:51:11 +08:00

2.1 KiB

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