reload libvirt actions to get current state
[AWS|Core] add eu-central-1 to the region whitelist
[AWS|Compute] switch to signature version 4
[AWS|Signature] make signature v4 components easy to extract
[AWS|Signature] V4 parameter signature needs to add X-Amz-Credential etc. before signing
[AWS|S3] Vhost buckets don't work if bucket name has a . in it

the S3 wildcard cert is only valid for *.s3.amazonaws.com, not
foo.*.amazonaws.com
[AWS|S3] switch to signature v4
[AWS|IAM] Use signature version 4
[AWS|ELB] Use Signature v4
[AWS|ELB] Update list of regions the mocks allow
[AWS|RDS] Use Signature v4
[AWS|RDS] update list of regions accepted by mocks
[AWS|Cloudwatch] Use Signature v4
[AWS|Cloudwatch] Update list of regions allowed by the mock
[AWS|Autoscaling] Use Signature v4
[AWS|Autoscaling] Update list of regions accepted by the mocks
[AWS|Elasticache] Use Signature v4
[AWS|STS] Use Signature v4
[AWS|SNS] Use Signature v4
[AWS|SQS] Use Signature v4