remove the agent matrix work

[nammn]

Summary

• TD

Database:

from:

+------------------------------------------------------------+
|                        Pod: rs1                            |
+------------------------------------------------------------+
| Container 1: mongodb-agent (operator suffixed)             |
|   - entry: agent-launcher.sh                               |
|   - livenessProbe                                          |
|   - readinessProbe                                         |
+------------------------------------------------------------+
| Container 2: mongodb-enterprise-database                   |
|   - mongod                                                 |
|   - mongosh                                                |
+------------------------------------------------------------+

to:

+------------------------------------------------------------+
|                        Pod: rs1                            |
+------------------------------------------------------------+
| Container 1: mongodb-agent (not operator suffixed)         |
|   - entry: agent-launcher-shim.sh                          |
|   - dummy-livenessProbe                                    |
|   - dummy-readinessProbe                                   |
+------------------------------------------------------------+
| Container 2: utilities-holder (name tbd)                   |
|   - readinessProbe                                         |
|   - livenessProbe                                          |
|   - agent-launcher.sh                                      |
+------------------------------------------------------------+
| Container 3: mongodb-enterprise-database                   |
|   - mongod                                                 |
|   - mongosh                                                |
+------------------------------------------------------------+

AppDB:

from:

+------------------------------------------------------------+
|                        Pod: rs1                            |
+------------------------------------------------------------+
| Container 1: mongodb-agent (operator suffixed)             |
|   - entry: agent/mongodb-agent                             |
|   - agent-launcher.sh                                      |
|   - livenessProbe                                          |
|   - readinessProbe                                         |
+------------------------------------------------------------+
| Container 2: mongodb-enterprise-database                   |
|   - mongod                                                 |
|   - mongosh                                                |
+------------------------------------------------------------+

to:

+------------------------------------------------------------+
|                        Pod: rs1                            |
+------------------------------------------------------------+
| Container 1: mongodb-agent (not operator suffixed)         |
|   - entry: /usr/local/bin/setup-agent-files.sh &&          |
|            agent/mongodb-agent                             |
|   - agent-launcher-shim.sh (unused)                        |
|   - dummy-livenessProbe                                    |
|   - dummy-readinessProbe                                   |
+------------------------------------------------------------+
| Container 2: utilities-holder (name tbd)                   |
|   - readinessProbe                                         |
|   - livenessProbe                                          |
+------------------------------------------------------------+
| Container 3: mongodb-enterprise-database                   |
|   - mongod                                                 |
|   - mongosh                                                |
+------------------------------------------------------------+

Summary Changes

This pull request introduces significant changes to the MongoDB Kubernetes operator, focusing on refactoring, architecture updates, and bug fixes. The changes include removing unused dependencies, improving the handling of static and non-static architectures, and enhancing test coverage. Below is a categorized summary of the most important changes:

Refactoring and Code Simplification

• No operator suffixed agent returned by the operator for the agent
• Consolidated logic for handling static and non-static architectures in the buildDatabaseStatefulSetConfigurationFunction by introducing shared and architecture-specific modifications. [1] [2]
• Renamed InitDatabaseNonStaticImage to InitDatabaseImage in DatabaseStatefulSetOptions for clarity.

Static and Non-Static Architecture Handling

• Introduced separate functions (buildStaticArchitecturePodTemplateSpec and buildNonStaticArchitecturePodTemplateSpec) to handle static and non-static architectures, improving modularity and maintainability.
• Updated the AppDbStatefulSet function to include opts.InitAppDBImage when defining init containers, ensuring proper handling of both architectures.

Enhancements to StatefulSet and Pod Templates

• Added a new container (automationUtilitiesPodTemplateFunc) to the appDbPodSpec for managing utility scripts and hooks, along with corresponding volume mounts. [1] [2]
• Adjusted the AutomationAgentCommand to include additional startup parameters for better configuration.

Proof of Work

• passing ci
• new e2e test: TBA

Checklist

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• Have you checked for release_note changes?

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