We need to make the change API process more clear for changing tests.

After API was changed we had output json changed too, as result our tests which use parsing output json had broken.
For example:
the old output was:

COMMAND: 'neofs-cli --config /tests/neofs_cli_configs/empty_passwd.yml object head --rpc-endpoint 'obj-nn-test-node1.spb.yadro.com:8081' --wallet '/tests/TemporaryDir/9e36c117-375a-4bb9-98d4-4069ed75bd85.json' --cid '5bx2Sf6QGH1cwPYygKXbnci54c2r4B7U57nyKqJKSn3F' --oid 'DBLVipfwZ2RidS8VHtEHuytTWPxWm7RCQCrmwfGoaNxt' --json'
OUTPUT:
...
"object":{
		"verb":"DELETE", 
		"address":{
			"containerID":{
					"value":"RGK2R6ck2MYpZwA0fDZjzkEhLNh+jQPy1ppvinOvM34="
					}, 
			"objectID":{"value":"L0Npxk176tmA5R8TG1KUgrKg3PDmyeH4CJ/wwp3oTfA="}
			}}}, 
...

the new output is:

COMMAND: 'neofs-cli --config /tests/wallet_config.yml object head --rpc-endpoint 'obj-nn-test-node2.spb.yadro.com:8081' --wallet '/tests/TemporaryDir/05e48067-b192-429f-973d-d336a449a5d6.json' --cid '43qM2vL1PEUgJ8JDaRqD9YjZW5D8q6QWxUgWbwy6hjib' --oid '3Gyij4fKgWMM5ut75FjP6bpoUWQmYQpVgE1UYhRxKXqU' --json'
OUTPUT:
...
		"object":{
			"verb":"DELETE", 
			"target":{"container":{"value":"LUzi/6K59Svl6oq02HEtf5o1pzVNHtn/4MJe9/rCQWQ="}, 
			"objects":[{"value":"q7OWeKaYaCr+q11OkmA0JiFRaSHCAGOF9K2OsehOeR0="}]}
		}}, 
...

The issue provides old and new JSON output for the object head API and says tests that parse the output broke, but it names no files or tests. Start by locating tests that parse this output and the API change that altered the object shape; done means the change process and required test updates are clearly documented.