[maven-release-plugin] prepare release jclouds-1.8.0-rc1
[maven-release-plugin] prepare for next development iteration
Addressing Checkstyle violations
JCLOUDS-656: Parse Swift authentication headers case-insensitively

Also ensure they are added to the result object with the normalized
capitalization expected by downstream code.

Follow-up to 375cb207.
JCLOUDS-650: ContainerNotFoundException on putBlob

Found with Ceph s3-tests and s3proxy.
JCLOUDS-496: Use the security groups options in the portable TemplateOptions
Trivial commit to trigger Checkstyle