Add --include-tickets option to generate contributors list script.
Issue LIBCLOUD-465: Add new EC2 I2 instance types to EC2 driver.

Also update pricing information.

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Update CHANGES.
Update CHANGES ordering.
Issue: LIBCLOUD-463 Add VPC support for security group creation (EC2 driver)

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Update CHANGES.
docs: Fix a typo.
Issue: LIBCLOUD-466 Add ingress/egress VPC support to security group rules.

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Move "private" method to the end, add a docstrings.
Update CHANGES.
Fix indentation.
Fix test failure in Python 2.5; enumerate in 2.5 doesn't support start argument.
Issue LIBCLOUD-464: Add methods for deleting security groups to the EC2 driver.
Fix ex_delete_security_group method to call the correct method.
Fix a typo in the test and make sure the tests actually run.
Merge pull request #2 from apache/trunk

Pulling in latest updates