boto/boto — pull request #859 by jamesls (2012-07-09 20:21:23+00:00)
Title: str() http params in sigv4 implementation

This accommodates any non str params for sigv4. The particular issue I was
running into was cloudformation support for sigv4 where the TimeoutInMinutes
param was causing this code to raise an exception.

Unittests pass, and I ran the ec2/dynamodb tests as well:

```
$ python test.py -t dynamodb
nose command: test.py -a !notdefault,dynamodb
..
----------------------------------------------------------------------
Ran 2 tests in 201.559s

OK
```

```
$ python test.py -t ec2
nose command: test.py -a !notdefault,ec2
..................
----------------------------------------------------------------------
Ran 18 tests in 244.276s

OK
```