Another baby step towards #123, this change follows from #192 and merges
the two concepts of Origin in a renderable node. We also cut out a layer
of abstraction, and add an OriginTable method to Report, which directly
generates a table of info for the detail pane given any origin node ID.
Other changes from feedback:
- Assume origin IDs are unique and don't reflect.Dedupe
- Improve origin ID lookup
- Move OriginTable to detailed_node.go, as a free function
- rm app/detail_pane.go (empty)
- All HostMetadata information becomes NodeMetadata
- Significant change to mechanics, but same net effect
- LocalNets becomes "local_networks", space-separated list of CIDRs
- Load becomes simple single string
- Use MakeHostNodeID for indexing into Host topology
- (That changes the app /origin/{id} handler; will be removed later)
- Use constructors instead of ScopeDelim everywhere
- Use constructors instead of IDDelim everywhere
- IDDelim is renamed EdgeDelim, for clarity
- Partial import of the new test fixtures, to be completed later
- Add interface to xfer/collector.go
- Add some more tests
- quit field changed to make it consistent with other Stoppable components in Scope
- Add peek, only used for tests
- Move peers from flags to args in the app
- Allow users to specify peers as IPs and hostname, both with and without ports
- Allow users to specify peers on ./scope launch, and plumb that through entrypoint.sh and run-app
- Improce ./scope usage text
- Add brief document explaining how to cluster Scope
