GUI-584: Set choices for  static fields (e.g. root device type) in Angular rather than server-side to reduce the DOM weight of the IAM policy generator.
GUI-584: Add canned ACL type choices for s3:x-amz-acl condition key to IAM policy generator
GUI-584: Add s3:VersionId condition key to IAM policy generator
GUI-584: Add AWS region constraint (s3:LocationConstraint) condition key to IAM policy generator for S3 statements
GUI-584: Add s3:prefix and s3:delimiter condition keys for IAM policy generator
Merge pull request #498 from eucalyptus/GUI-584

GUI-584: S3-specific condition keys for IAM policy generator