Add fragment reference from_image command

[DomAyre]

Why

Allows the user to generate the fragment reference rego for building policies and insert that in the final policy.

How

• Add a command to generate the fragment reference
• Add the --with-fragments flag to acipolicygen
• Add testing

---

This checklist is used to make sure that common guidelines for a pull request are followed.

Related command

General Guidelines

• Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)
• My extension version conforms to the Extension version schema

[azure-client-tools-bot-prd]

⚠️Azure CLI Extensions Breaking Change Test

⚠️confcom

rule	cmd_name	rule_message	suggest_message
⚠️ 1015 - SubgroupPropUpdate	confcom	sub group confcom updated property sub_groups from {} to {'confcom fragment': {'name': 'confcom fragment', 'commands': {'confcom fragment attach': {'name': 'confcom fragment attach', 'is_aaz': False, 'is_preview': True, 'parameters': [{'name': 'signed_fragment', 'options': [], 'type': 'custom_type', 'required': True, 'nargs': '?', 'default': "<_io.BufferedReader name='<stdin>'>"}, {'name': 'manifest_tag', 'options': ['--manifest-tag'], 'required': True}]}, 'confcom fragment push': {'name': 'confcom fragment push', 'is_aaz': False, 'is_preview': True, 'parameters': [{'name': 'signed_fragment', 'options': [], 'type': 'custom_type', 'required': True, 'nargs': '?', 'default': "<_io.BufferedReader name='<stdin>'>"}, {'name': 'manifest_tag', 'options': ['--manifest-tag'], 'required': True}]}}, 'sub_groups': {'confcom fragment references': {'name': 'confcom fragment references', 'commands': {'confcom fragment references from_image': {'name': 'confcom fragment references from_image', 'is_aaz': False, 'parameters': [{'name': 'image', 'options': [], 'type': 'string', 'required': True}, {'name': 'minimum_svn', 'options': ['--minimum-svn'], 'type': 'string'}]}}, 'sub_groups': {}}}}, 'confcom containers': {'name': 'confcom containers', 'commands': {'confcom containers from_image': {'name': 'confcom containers from_image', 'is_aaz': False, 'parameters': [{'name': 'image', 'options': [], 'type': 'string', 'required': True}, {'name': 'platform', 'options': ['--platform'], 'type': 'string', 'default': 'aci'}]}}, 'sub_groups': {}}}
⚠️ 1006 - ParaAdd	confcom acifragmentgen	cmd confcom acifragmentgen added parameter out_signed_fragment
⚠️ 1006 - ParaAdd	confcom acipolicygen	cmd confcom acipolicygen added parameter fragment_definitions

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[azure-client-tools-bot-prd]

Hi @DomAyre,
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in setup.py as well.

[github-actions]

The git hooks are available for azure-cli and azure-cli-extensions repos. They could help you run required checks before creating the PR.

Please sync the latest code with latest dev branch (for azure-cli) or main branch (for azure-cli-extensions).
After that please run the following commands to enable git hooks:

pip install azdev --upgrade
azdev setup -c <your azure-cli repo path> -r <your azure-cli-extensions repo path>

[github-actions]

• For more info about extension versioning, please refer to Extension version schema