Allow heat parameters to be set in the stack

[julienvey]

os.stacks = [{
  name: 'mystack',
  template: '/path/to/my/template.yml',             
  parameters: {
    router_id: '1234'
  }
}]

[GonZo]

+1

[stefreak]

+1 ... with this feature vagrant would be perfect to test heat stacks using testinfra ...

[maglo]

or even

os.stacks = [{
  name: 'mystack',
  template: ['/path/to/my/template.yml', '/path/to/my/parameters.yaml`]
}]

since paramters can be supplied in the form of a yaml to openstack stack create -t template.yaml -t parameters.yaml <stack name>