Merge pull request fog#3038 from NETWAYS/feature/improved_network_fla…

…vor_models

Feature/improved network flavor models

Merge pull request fog#3513 from ihmccreery/dev-docs

CONTRIBUTING: discuss ongoing changes, link to Roadmap in Wiki and relevant issues

Merge pull request fog#3447 from bzwei/resource_options

Pass options when get resources from a stack

Release 1.27.0

Release 1.26.0

Release 1.25.0

Release 1.24.0

Release 1.23.0

Release 1.22.1

Release 1.22.0