Update cheatsheets

consul

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# consul
+
+> Distributed key-value store with health checking and service discovery.
+> Some subcommands such as `consul kv` have their own usage documentation.
+> More information: <https://www.consul.io/commands>.
+
+- Display help:
+
+`consul --help`
+
+- Display help for a subcommand:
+
+`consul {{subcommand}} --help`
+
+- Display version:
+
+`consul --version`