Add chaos test of SSB journey with a rolling restart

[tsmith023]

This PR introduces a new chaos test verifying the behaviour of the new server-side batching functionality when a rolling restart occurs during a single batch ingestion process

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   1   3   2	View in Orca
Passed	SAST	0   0   0   1	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

🛡️ The following IaC misconfigurations have been detected

	NAME	FILE
	Missing User Instruction	...g-restart/Dockerfile	View in code
	Apt Get Install Pin Version Not Defined	...g-restart/Dockerfile	View in code
	Healthcheck Instruction Missing	...g-restart/Dockerfile	View in code
	Pip install Keeping Cached Packages	...g-restart/Dockerfile	View in code
	APT-GET Not Avoiding Additional Packages	...g-restart/Dockerfile	View in code
	Apt Get Install Lists Were Not Deleted	...g-restart/Dockerfile	View in code

🛡️ The following SAST misconfigurations have been detected

	NAME	FILE
	Weak random number generation may compromise cryptographic security	...lling-restart/run.py	View in code