Extend images actions functionality

- add get_info_images action
- add ability to specify image_id, image_name or images_list to action
- change checking of existing images on destination cloud in the deploy
  method of glance_image resource from name to checksum
- move image actions from base to os
- move __patch_image staticmethod to glance_image resource
- fix some pep8 issues
Merge pull request #14 from miarmak/images_actions

Extend images actions functionality
Converter typo fix
Merge pull request #15 from miarmak/converter_typo_fix

Converter typo fix
Test for cinder storage
Unit tests for actions cinder
Merge pull request #17 from mirrorcoder/master

unit-tests for actions and cinder resources
Change dict structure in glance_image resource and fix unittests
Merge pull request #18 from miarmak/fix_glance_unittests

Change dict structure in glance_image resource and fix unittests
Added get functions for neutron essences
Added upload functions, changed upload logic with resource hash
get and upload funcs of sec_groups and sec_groups_rules
Neutron unittests and fix bugs for neutron resource
Changed read_info
Added identity_resource, added additional str check to get_resource_hash, fixed tests
pep8, added meta to resources info
Merge pull request #19 from toha10/neutron_resource

Neutron resource
Fix g2g action

- Add default behaviour in case of no specified images in opts
- Add return of the new image structure in g2g action
Merge pull request #20 from miarmak/g2g_action_fix

Fix g2g action
Add some consts