URLs to the Packet CCM and CSI could break

[displague]

The URLs included in the cluster template are relative to the master branch on the CCM and CSI repositories. If this branch is renamed or the files are removed or relocated, in either repository, this provider will break.

https://github.com/kubernetes-sigs/cluster-api-provider-packet/blob/ab54c495108472b3989fcb581517be10790367e7/templates/cluster-template.yaml#L28-L30

These URLs should be pinned to a specific tag to make them less fragile.

[displague]

We can pin the CCM URL by git commit hash and update the CCM to 1.0.1 once kubernetes-sigs/cloud-provider-equinix-metal#59 is merged.