deploy: Fix git-lfs support

Fix git-lfs support in scap deploy and scap deploy-local by
ensuring that lfs.url is set based on the original origin of the repo
being deployed.

git_binary_manager is no longer a required configuration setting to
enable git-fat or git-lfs. If git_binary_manager is not set, the
binary manager will be automatically detected by scanning the
.gitattributes file (if any) in the repo being deployed.

Bug: T279509, T324664, T180627

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Related MRs:

• !224 (merged)
• !223 (merged) (This MR)
• master