Fix erroneous param description
Add "expected" argument to boto.dynamodb2.Table.delete_item

Also add the "conditional_operator" argument that goes with it.
Fixed some code formatting and typo in SQS tutorial docs
Documentation update -- Child worflows and poll API. (Issues 2063 & 2064)
DOC Tutorial update for metrics and use of dimensions property. #2336
Let people know only EC2 supported for cloudwatch
make ip_addr optional, use fqdn
add route53 healthcheck unit tests
update route53 health check integration tests
Add namespace to AccessControlPolicy xml representation

Scality implements S3 which is for instance used by GreenQloud to
provide an S3 interface to their Storage Qloud. Scality's
implementation requires the AccessControlPolicy to include a
namespace attribute to work properly. This xmls namespace is
retrieved from the parsed AccessControlPolicy.

This is also what the example in the Amazon S3 docs does:
http://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketPUTacl.html

This commit adds the namespace attribute to the xml representation
of the Policy object so that it can be used to set acl grants thus
providing support for Scality storage clouds, like the GreenQloud
one, in boto.

Thanks to Tryggvi Lárusson, CTO of GreenQloud, for identifying this.
Add a test case for ACL policy namespace

The access policy namespace should be retained for the xml
representation of the parsed AccessControlPolicy.
get route53 health check ID properly
add route53 healthcheck unit test
Merge pull request #2345 from zihaoyu/route53_healthcheck_ip_addr

Make ip_addr optional in Route53 HealthCheck. Fixes #2345.
Add T2 instance types to EC2
Add new regions for CloudTrail and Kinesis
Merge pull request #2342 from tryggvib/develop

Add namespace to AccessControlPolicy xml representation. Fixes #2342.
Merge pull request #2341 from geekpete/patch-1

Let people know only EC2 supported for cloudwatch. Fixes #2341.
Merge pull request #2340 from ilam/cloudwatch

DOC Tutorial update for metrics and use of dimensions property. Fixes #2336, #2340.
Merge pull request #2333 from b0morris/develop

Documentation update -- Child workflows and poll API. Fixes #2063, #2064, #2333.