feat(bottlerocket-update-operator): Add an option to specify topologySpreadConstraints for the apiserver deployment resource.

[AviorSchreiber]

Description of changes:
Add an option to specify topologySpreadConstraints for the apiserver deployment resource.

Testing done:
I manually tested this by running the helm template with the default values to ensure the default behavior is retained. Then, I added the following values to verify that the new topologySpreadConstraints was applied to the deployment resource.

placement:
  apiserver: 
    topologySpreadConstraints:
    - maxSkew: 1
      topologyKey: kubernetes.io/hostname
      whenUnsatisfiable: DoNotSchedule
      labelSelector:
        matchLabels:
          brupop.bottlerocket.aws/component: agent
    - maxSkew: 1
      topologyKey: topology.kubernetes.io/zone
      whenUnsatisfiable: ScheduleAnyway
      labelSelector:
        matchLabels:
          brupop.bottlerocket.aws/component: agent

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[cbgbt]

Thanks so much for your contribution!