allow bootstrap to read from Git so that Arlon + Argo + capi can be installed from yaml in a users own git

[cre8minus1]

allow bootstrap to read from Git so that Arlon + Argo + capi can be installed from yaml in a users own git this is so that the entire bootstrap of all components can be GitOps in design.

Aha! Link: https://pf9.aha.io/features/ARLON-125

[cruizen]

cc: @Rohitrajak1807 since you have done similar work with arlon install

[Rohitrajak1807]

@cre8minus1 a question: what is "bootstrap" and what are advantages to installing argocd, arlon and capi from user supplied manifests when we're doing it in one command from the CLI?