Merge pull request #90 from andylyall/2013.07

Updates to vmproducts and allow Double for disk size
[maven-release-plugin] prepare release dasein-cloud-aws-2013.07.7
[maven-release-plugin] prepare for next development iteration
Include the EBS volumes in the VirtualMachine object.
Requires associated dasein-cloud-core patch.
Made getFingerprint return null if it cannot find a match.
Added null checks for bucket and objects.
Merge pull request #92 from binod33/2013.07

Made getFingerprint return null if it cannot find a match.
Fix two issues with the timestamp adjustment code:
1: if the begin/end timestamps are the same (or within 2 minutes of each other) then the test
for the begin timestamp being older that 1 or 2 days is not made (thus you
can ask for data as far back as you wish);
2: if both timestamps are older than 2 days, only the start tiemstamp is adjusted yielding a "start
after end" error from AWS.
Merge pull request #91 from cafed00d/2013.07

Include the EBS volumes in the VirtualMachine object.
Removed String toLower during signing process