Write logger output to stderr to conform to convention

Writing log to stdout causes issues when piping.
Update network parser to add private ips to array
Previously the network parser would overwrite the private ip addresses
if there were more than one. These are now added to an array
Update documentation of return values
Closes #2469

Monitoring-specific soluton to pagination. 'marker' was being extracted but not stored.
fix get_bucket_acl request method in Google Cloud Storage
Merge pull request #2551 from elight/monitoring_pagination

[Rackspace] Monitoring pagination fix
[libvirt] fix readme gem reference

Closes #2553
Merge pull request #2554 from allomov/fix-get-bucket-acl

[google] Fix get_bucket_acl request method in Google Cloud Storage
Merge pull request #2549 from jsmapr1/master

Return Private IPs in an array using AWS Describe Network Interface
fix put_bucket_acl request for Google Cloud Storage service
remove unnecessary duplication in put_bucket_acl request in Google storage
add put_object_acl request to Google Cloud Storage service
Ported fog rackspace storage docs for OpenStack
Oops. Missed a couple of deletions of CDN stuff.
Merge pull request #2560 from elight/rackspace_storage_docs

[OpenStack] Ported fog Rackspace storage docs to OpenStack
No, we don't want people hitting up Rackspace specifically about OpenStack docs. It's a joint effort!
Adds getting started guide for OpenStack fog
Added Ruby-specific code blocks
[openstack|compute] Adding docs for OpenStack Compute
[rackspace|compute] updating Rackspace compute docs