CLOUDP-295785 - add skip_if_exists flag to all releasable images

[MaciejKaras]

Summary

This PR configures all image release tasks to first check if image already exists and prevent overriding them.

Proof of Work

skip_if_exists is already configured for version-upgrade-hook and readiness-probe tasks and works. I've also added possibility to add skip_if_exists through pipeline.py args and tested it:

scripts/dev/run_python.sh scripts/release/pipeline.py agent --build-scenario patch --current-agents --skip-if-exists=True
...
Build configuration: ImageBuildConfiguration(scenario=<BuildScenario.PATCH: 'patch'>, version=None, latest_tag=False, olm_tag=False, registries=['268558157000.dkr.ecr.us-east-1.amazonaws.com/dev/mongodb-agent'], dockerfile_path='docker/mongodb-agent/Dockerfile', platforms=['linux/amd64'], sign=False, skip_if_exists=True, parallel=False, parallel_factor=0, all_agents=False, currently_used_agents=True)

Checklist

• Have you linked a jira ticket and/or is the ticket in the title?
• Have you checked whether your jira ticket required DOCSP changes?
• Have you added changelog file?
  • use skip-changelog label if not needed
  • refer to Changelog files and Release Notes section in CONTRIBUTING.md for more details

[github-actions]

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MCK 1.5.1 Release Notes