Substitute correct manifests version in a particular docs version

[mflendrich]

Issue originally authored by tnozicka as #2204

We use sphinx-substitutions to define a a git reference (branch / sha) in a single place and then substitute it to the URLs to deploy the manifests from. This tends to collide with sphinx-multiversion taking conf.py from master branch only.

https://github.com/scylladb/scylla-operator/blob/397ac37/docs/source/conf.py#L55-L64

We need to wire the substitution patterns somewhere else so sphinx-multiversion takes these from the particular branch.

/assign dgarcia360
@dgarcia360 can you please help to set this up?

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In response to this:

Issue originally authored by tnozicka as #2204

We use sphinx-substitutions to define a a git reference (branch / sha) in a single place and then substitute it to the URLs to deploy the manifests from. This tends to collide with sphinx-multiversion taking conf.py from master branch only.

https://github.com/scylladb/scylla-operator/blob/397ac37/docs/source/conf.py#L55-L64

We need to wire the substitution patterns somewhere else so sphinx-multiversion takes these from the particular branch.

/assign dgarcia360
@dgarcia360 can you please help to set this up?

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