mention maintain-only-as-essential mode#3107

Merged

catherineluse merged 2 commits intorancher:masterfrom torvitas:patch-1

Mar 16, 2021

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Commits on Mar 13, 2021

mention maintain-only-as-essential mode
torvitas
authored

Commits on Mar 16, 2021

Link to support doc in RancherOS overview
catherineluse
authored