Fix version conflict regarding fog

[dhoppe]

Hello Mathieu,

please update the file vagrant-openstack.gemspec to fix the following version conflicts / warnings during the build and installation of the vagrant-openstack plugin.

dhoppe@macbook /tmp/vagrant-openstack (git)-[master] % gem build vagrant-openstack.gemspec
WARNING:  licenses is empty, but is recommended.  Use a license abbreviation from:
http://opensource.org/licenses/alphabetical
WARNING:  description and summary are identical
WARNING:  pessimistic dependency on fog (~> 1.22.0) may be overly strict
  if fog is semantically versioned, use:
    add_runtime_dependency 'fog', '~> 1.22', '>= 1.22.0'
WARNING:  open-ended dependency on rake (>= 0, development) is not recommended
  if rake is semantically versioned, use:
    add_development_dependency 'rake', '~> 0'
WARNING:  pessimistic dependency on rspec (~> 2.13.0, development) may be overly strict
  if rspec is semantically versioned, use:
    add_development_dependency 'rspec', '~> 2.13', '>= 2.13.0'
WARNING:  See http://guides.rubygems.org/specification-reference/ for help
  Successfully built RubyGem
  Name: vagrant-openstack
  Version: 1.0.0
  File: vagrant-openstack-1.0.0.gem

dhoppe@macbook /tmp/vagrant-openstack (git)-[master] % vagrant plugin install vagrant-openstack-1.0.0.gem
Installing the 'vagrant-openstack-1.0.0.gem' plugin. This can take a few minutes...
The plugin(s) can't be installed due to the version conflicts below.
This means that the plugins depend on a library version that conflicts
with other plugins or Vagrant itself, creating an impossible situation
where Vagrant wouldn't be able to load the plugins.

You can fix the issue by either removing a conflicting plugin or
by contacting a plugin author to see if they can address the conflict.

Vagrant could not find compatible versions for gem "fog":
  In Gemfile:
    vagrant-aws (>= 0) ruby depends on
      fog (~> 1.22) ruby

    vagrant-openstack (= 1.0.0) ruby depends on
      fog (~> 1.15.0) ruby

vagrant plugin install vagrant-openstack-1.0.0.gem  5.20s user 0.73s system 43% cpu 13.517 total

Kind regards, Dennis

[mat128]

Had to bump fog to avoid some warnings with Vagrant 1.8.1. I used fog 1.22 to avoid dependency hell with vagrant-aws. This should solve your issue.