Update DeploymentStepPackageRequirement in all projects

Update-DeploymentStepPackageRequirement.ps1

# This script requires DeploymentStepPackageRequirement which is scheduled for release in Octopus 4.2

# You can this dll from your Octopus Server/Tentacle installation directory or from
# https://www.nuget.org/packages/Octopus.Client/
Add-Type -Path 'C:\path\to\client\lib\Octopus.Client.dll'

$apikey = 'API-YOURAPIKEY' # Get this from your profile
$octopusURI = 'http://localhost:8065' # Your server address

# create the connection to the Octopus Server
$endpoint = New-Object Octopus.Client.OctopusServerEndpoint $octopusURI,$apikey
$repository = New-Object Octopus.Client.OctopusRepository $endpoint

# fetch all projects
$projects = $repository.Projects.GetAll()


foreach ($project in $projects) {
    # iterate through the projects and fetch the deployment process
    $process = $repository.DeploymentProcesses.Get($project.DeploymentProcessId)

    # iterate through each "parent" step in the deployment process
    foreach($step in $process.Steps) {

        # check if this is one we want to update
        # we may need more complciated logic here to determine which deployment steps need updating.
        # perhaps every step before some other step or something similar?
        if ($step.Name -like "*_build_*") {

            $step.WithPackageRequirement([Octopus.Client.Model.DeploymentStepPackageRequirement]::BeforePackageAcquisition)
            $repository.DeploymentProcesses.Modify($process)

        }
    }
}