Added step to check for targets with the supplied tags

[mcasperson]

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Background

This step allows a deployment process to check that targets with the defined tag are present in the Octopus space.

Pre-requisites

• Id should be a GUID that is not 00000000-0000-0000-0000-000000000000
  • NOTE If you are modifying an existing step template, please make sure that you do not modify the Id property (updating the Id will break the Library sync functionality in Octopus).
• Version should be incremented, otherwise the integration with Octopus won't update the step template correctly
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Fixes # . If there is an open issue that this PR fixes add it here, otherwise just remove this line

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[Copilot]

Pull Request Overview

This PR adds a new step template that allows deployment processes to check for the presence of targets with specified tags in an Octopus space, failing the deployment with a custom message if no matching targets are found.

• Introduces a PowerShell-based step template for target validation
• Validates target availability before deployment execution
• Provides configurable error messaging for failed validations

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Comments suppressed due to low confidence (1)

step-templates/octopus-check-roles.json:1

• The API endpoint uses 'roles=$role' parameter but the template description and labels refer to 'tags'. In Octopus Deploy, roles and tags are different concepts. If checking for tags, the API parameter should be 'machineNames' or similar tag-based filtering.

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[robpearson]

Nice simple script. 👌