Mach-composer

- Add Contentful support

Breaking changes

- `is_software_component` has been replaced by the `integrations` settings


components:
- name: my-product-types
source: git::ssh://gitgithub.com/example/product-types/my-product-types.git
version: 81cd828
is_software_component: false


becomes


components:
- name: my-product-types
source: git::ssh://gitgithub.com/example/product-types/my-product-types.git
version: 81cd828
integrations: ["commercetools"]


or `integrations: []` if no integrations are needed at all.

- Add option to specify custom resource group per site

Breaking changes

- All `resource_group_name` attributes is renamed to `resource_group`
- The `storage_account_name` attribute is renamed to `storage_account`

- Fixed Azure config merge: not all generic settings where merged with
site-specific ones
- Only validate short_name length check for Azure implementations
- Setup Frontdoor per 'public api' component regardless of global Frontdoor
settings

- Fixed rendering of STORE environment variables in components
- Updated Terraform version to 0.13.4
- Fix `--auto-approve` option on `mach apply` command

- Add AWS support
- Add new required attribute `cloud` in general config

- Initial release