LIBCLOUD-516: Add list_size() support into Eucalyptus for cluster versions >= 3.3.0. In this version Eucalyptus introduced the DescribeInstanceTypes call which is specific to EUCA and is not AWS compatible. This call requires a different XML namespace.

Closes #249.

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Update CHANGES.
Update vCloud 'Powered Off' Node state mapping introduced in v0.14.0

vCloud state 8 is powered off, can be turned back on. NodeState.TERMINATED now means 'cant be started later on'

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Update CHANGES.