As part of the health check per node, write any detected changes to the node capabilities

[jeremydmiller]

Account for dynamically discovered capabilities from IAgentFamily. I.e., be ready for the dynamic tenant databases

[jeremydmiller]

Need to make the health check also store the capabilities. Or, get cracking and get a gossip protocol going between the nodes to communicate the capabilities. Come back to this before 3.0.