Set X-Registry-Auth header on manifest push and bump to new API

[dklimpel]

• Allows the setting of an authentication header similar to the push of images (related to #121 Set X-Registry-Auth header on image push #164)
• The current api to push manifests has been deprecated since podman 4.0 (http://podman.io/libpod/manifests/{name}/push)
• Use the "new" API: http://podman.io/libpod/manifests/{name}/registry/{destination}

I was already unable to use the old API with Podman 4.9

The current implementation for image push:

podman-py/podman/domain/images_manager.py

Lines 241 to 268 in a75e8c2

	def push(
	self, repository: str, tag: Optional[str] = None, **kwargs
	) -> Union[str, Iterator[Union[str, dict[str, Any]]]]:
	"""Push Image or repository to the registry.
	Args:
	repository: Target repository for push
	tag: Tag to push, if given
	Keyword Args:
	auth_config (Mapping[str, str]: Override configured credentials. Must include
	username and password keys.
	decode (bool): return data from server as dict[str, Any]. Ignored unless stream=True.
	destination (str): alternate destination for image. (Podman only)
	stream (bool): return output as blocking generator. Default: False.
	tlsVerify (bool): Require TLS verification.
	format (str): Manifest type (oci, v2s1, or v2s2) to use when pushing an image.
	Default is manifest type of source, with fallbacks.
	Raises:
	APIError: when service returns an error
	"""
	auth_config: Optional[dict[str, str]] = kwargs.get("auth_config")
	headers = {
	# A base64url-encoded auth configuration
	"X-Registry-Auth": encode_auth_header(auth_config) if auth_config else ""
	}

[dklimpel]

/assign umohnani8

[jwhonce]

@dklimpel Please add a test. TIA

/approve

[openshift-ci]

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[dklimpel]

I have added some tests.

The failing test of CI podman/tests/integration/test_pods.py::PodsIntegrationTest::test_pod_crud seems to be unrelated.

The tests detected a wrong return type of encode_auth_header.

[inknos]

/packit retest-failed

[inknos]

/packit retest-failed

[inknos]

test flakes addressed, LGTM