install cert-manager for dev

[todd-dsm]

Install the plugin for auto-completions.

% echo cmctl_${OS}_${ARCH} 
cmctl_darwin_arm64

curl -fsSL -o cmctl https://github.com/cert-manager/cmctl/releases/latest/download/cmctl_${OS}_${ARCH}

mv cmctl /opt/homebrew/bin/kubectl-cert_manager

chmod u+x /opt/homebrew/bin/kubectl-cert_manager

# Validate the binary is available
% which kubectl-cert_manager
/opt/homebrew/bin/kubectl-cert_manager

# Validate that it works as a kubectl plugin 
% kubectl cert-manager help

kubectl cert-manager is a CLI tool manage and configure cert-manager resources for Kubernetes

Usage:
  kubectl cert-manager [command]
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