Merge pull request #1974 from torake/master

Must check for nil before checking for empty
Add a parameter to servers.all for rackspace v2 to make it the same as other providers
Merge pull request #1975 from skottler/rackspace_v2_server_filter_param

Add a parameter to servers.all for rackspace v2 to make it the same as other providers
Merge pull request #1958 from rackspace/os_large_files

[openstack|storage] upload files using blocks
random ip address support
Added rackspace monitoring with correct namespace

These files were merged from github.com/racker/rackspace-monitoring-rb. The
namespace was different than the convetion in fog so the namespace was modified
to be compliant with the rest of the fog library.
Fixed file path to adhere to fog mainline
Fixing namespace transition issue
Adding monitoring tests and their required changes

Changes made to lib/bin/rackspace.rb and lib/fog/rackspace.rb were required in
order to allow the tests to actually run. Changes to
lib/fog/rackspace/monitoring.rb were made in an effort to get failure tests to
run without the error that I am purposefully creating causing the test to fail.
Now catching errors correctly, all tests succeed
Catching errors correctly, all tests succeed.
Adding progress on check tests
Cleaned up tests, removed ternary operators
Check tests now working, dns info required to run.
Switched check from dns to http remote request
Added list tests, helper formats. Cleaned check_tests.
Consolidated list tests, added alarm tests.
Added alarm list and alarm get tests
Removed unneeded testing group
Adding alarm example list, get, and evaluate tests