release cadence and channels for the ubuntu-core snap

[Leo Arias]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

We will start with the edge gates and triggers, and adjust the plan as
we progress if we find good reasons on the way.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=gemp
-----END PGP SIGNATURE-----