Cloud initialization does not require hibernate cache - EUCA-9742

EUCA-9742
Merge remote-tracking branch 'origin/dev/sjones/EUCA-9742' into testing
EC2 VPC security group updates - EUCA-9608

Security groups are updated for VPC support. VPC security groups allow
all protocols (0-255) and rules for any protocol (-1). The permitted
characters in VPC security group names and descriptions are different
from non-VPC security groups. VPC security groups can only reference
other groups in the same VPC. The default security group in a VPC cannot
be deleted.

EUCA-9608
EC2 VPC security group egress rule support - EUCA-9611

NetworkRule now includes a flag to denote egress/ingress rules. Egress
authorize/revoke actions are implemented and egress rules are included
when describing security groups.

EUCA-9611
Unit tests updated for security group changes - EUCA-9611
CloudWatch check for dimensions when processing metric data - EUCA-9774
Reply with short device name in meta-data requests.
Fixes for: EUCA-8637
Don't dump stack trace back to user for undefined meta-data entries.
Fixes for: EUCA-7886, EUCA-9739, EUCA-7842
Map ephemeral0 to 'sdb' for HVM and 'sda2' for paravirtualized image.
Fixes for: EUCA-7860
Added comments for about root device name
EC2 VPC EIPs - EUCA-9730

Elastic IP address support for EC2 VPC. Elastic IPs can now be allocated
for use in a VPC and associated with an ENI.

EUCA-9730
EC2 VPC filtering for instances - EUCA-9614

Support for vpc filters with ec2 instances. This includes filters such
as the instances vpc identifier, subnet identifier, and by many network
interface properties.

EUCA-9614
Merge remote-tracking branch 'origin/dev/sjones/EUCA-9614' into testing
Fix EC2 resource filter unit test - EUCA-9614