migrations:Update the public control container migrations

[vyaghras]

Description of changes:
We need to use ReplaceStringMigration for public container. Also the old version are plain string instead of schnauzer generator string.

Testing done:

• Update to 1.33.0 from 1.28.0 having the old migrations as is.

apiclient get settings.host-containers
{
  "settings": {
    "host-containers": {
      "admin": {
        "enabled": true,
        "source": "328549459982.dkr.ecr.us-west-2.amazonaws.com/bottlerocket-admin:v0.11.16",
        "superpowered": true,
        "user-data": "eyJzc2giOnsiYXV0aG9yaXplZC1rZXlzIjpbXX19"
      },
      "control": {
        "enabled": true,
        "source": "328549459982.dkr.ecr.us-west-2.amazonaws.com/bottlerocket-control:v0.7.20",
        "superpowered": false
      }
    }
  }
}
bas

apiclient get settings.host-containers
{
  "settings": {
    "host-containers": {
      "admin": {
        "enabled": true,
        "source": "328549459982.dkr.ecr.us-west-2.amazonaws.com/bottlerocket-admin:v0.11.14",
        "superpowered": true,
        "user-data": "eyJzc2giOnsiYXV0aG9yaXplZC1rZXlzIjpbXX19"
      },
      "control": {
        "enabled": true,
        "source": "328549459982.dkr.ecr.us-west-2.amazonaws.com/bottlerocket-control:v0.7.18",
        "superpowered": false
      }
    }
  }
}

• Update to 1.33.0 from 1.28.0 having the old migrations updated.

apiclient get settings.host-containers
{
  "settings": {
    "host-containers": {
      "admin": {
        "enabled": true,
        "source": "328549459982.dkr.ecr.us-west-2.amazonaws.com/bottlerocket-admin:v0.11.16",
        "superpowered": true,
        "user-data": "eyJzc2giOnsiYXV0aG9yaXplZC1rZXlzIjpbXX19"
      },
      "control": {
        "enabled": true,
        "source": "328549459982.dkr.ecr.us-west-2.amazonaws.com/bottlerocket-control:v0.7.20",
        "superpowered": false
      }
    }
  }
}


apiclient get settings.host-containers
{
  "settings": {
    "host-containers": {
      "admin": {
        "enabled": true,
        "source": "328549459982.dkr.ecr.us-west-2.amazonaws.com/bottlerocket-admin:v0.11.14",
        "superpowered": true,
        "user-data": "eyJzc2giOnsiYXV0aG9yaXplZC1rZXlzIjpbXX19"
      },
      "control": {
        "enabled": true,
        "source": "328549459982.dkr.ecr.us-west-2.amazonaws.com/bottlerocket-control:v0.7.18",
        "superpowered": false
      }
    }
  }
}

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]

Do we need to do some kind of catchup migration to catch customers who are stranded on 0.7.18 and 0.7.19?

[cbgbt]

The code seems fine to me!

For the commit messages, make sure to add a space after migrations:.