[vcloud_director] Improve support for query service.
Merge pull request #2256 from nosborn/vcloud_director_queries

[vcloud_director] Improve support for query service.
[vcloud_director] Raise provider-specific exceptions.

HEADS UP: This is a breaking change for anyone rescuing Excon errors.
Add Atmos meta_data request and file_size
vcloud_director customization syntax Fix: extra comma was preventing to set the status correctly
[vcloud_director] Remove extraneous :
[AWS|SQS] Fix iam credentials not being refreshed
Merge pull request #2258 from fcheung/fix_sqs_credential_renewal

[AWS|SQS] Fix iam credentials not being refreshed
Merge pull request #2257 from tobyhede/master

Various atmos enhancements around file meta-data
remove instantiate_vapp_template helper dependencies
require vdc_id as a instantiate_vapp_template param
remove unnecessary helper
- make tags model to use post_undeploy_vapp
- fix syntax error in post_undeploy_vapp method
- remove post_vm_metadata
fix invalid syntax
Merge pull request #2254 from nosborn/vcloud_director_new_errors

[vcloud_director] Raise provider-specific exceptions.
fix situation where the content of the param can be false and not set the attr
Merge pull request #2259 from restebanez/vcloud_director/fix_instantiation_and_tags

Vcloud director/fix instantiation and tags creation
[vcloud_director] Call `end_point` not `endpoint`.
[vcloud_director] Explicitly handle duplicate names.
Auto-merge remote-tracking branch 'upstream/master'