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• As an org admin, I want to place two or more nodes into an HA Group so that my services will be continuously available.
• As an org admin, I want to add a node to an HA Group without affecting currently deployed services.
• As an org user, I want to place two or more nodes into an HA Group so that my services will be continuously available.
• As an org user, I want to add a node to an HA Group without affecting currently deployed services.
• As a device owner, I want to place two or more nodes into an HA Group so that my services will be continuously available.
• As a service deployer, I want to deploy non-HA services to a subset of members in an HA Group to avoid compute resource consumption for services that don't need to be continuously available.
• As a service deployer, I want to deploy a service ONLY to nodes in an HA Group.
• As a 

Command Line Interface

<Describe any changes to the hzn CLI, including before and after command examples for clarity. Include which users will use the changed CLI. This section should flow very naturally from the User Experience section.>

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