python3: sort dict for post_volumes_1234_action test

In Python 3, hash randomization is enabled by default. It causes the
iteration order of dicts and sets to be unpredictable and differ across
Python runs.

Sort the list and update the expecting result.

Change-Id: Iead7ca8f45b035abd78f0b25865b5f7e1b9f3294
Signed-off-by: Chuck Short <chuck.short@canonical.com>
python3: align the order of parameters for urlencode()

In Python 3.3, hash randomization is enabled by default. It causes the
iteration order of dicts and sets to be unpredictable and differ across
Python runs.

In the test case, the fixed expecting string will not match the test
result, it is relying on the dict order.

This change transforms the input dict to a sequence of two-element list,
with fixed order, and update the related expecitng string in test case.

Change-Id: I60d7bb3c4f940b76460ad5c417a1807915e0418e
Signed-off-by: Chuck Short <chuck.short@canonical.com>
Merge "python3: align the order of parameters for urlencode()"
Merge "python3: sort dict for post_volumes_1234_action test"