Dispatcherless SCION (#458)

* Topology file.

* Dispatcher.

* Remove reconnect_to_dispatcher.

* No more [quic] in CS configuration.

* Lint-related changes.

* Bump version on all hosts.

The changes to the dispatcher and scion daemon forces
any host to get new configuration from Coordinator.

* Generate dispatcher.toml in the Coordinator.

Also for systemd configuration.

* Remove comment.

* Dispatcher config w/ service addrs only for CS host.

The dispatcher toml configuration contains service_addresses
only for the host that runs the control service.

* Update testtopo and fixture with one host.

The host only runs a non CS service, the BW.

* Add UT for the particularities of dispatcher.toml.

Different content of the toml file depending on
whether the host has a CS or not.

* Remove leading / from systemd dispatcher tar config.

* Amend test for dispatcher.toml inside tar.

* Lint.

* Fix donkey bug: service_addresses is part of dispatcher.

* Recreate test data.

* Empty commit, trigger CI.

* Flag test_dispatcher is only used for docker tests.

Remove it.
In the near future, the default topo generation will
also be modified without this flag.

* Recreate test data.

Author: juagargi

scionlab/defines.py

@@ -40,7 +40,7 @@
 SD_METRICS_PORT = 30455          # "                       ditto
 
 DISPATCHER_PORT = 30041          # UDP/IP, 127.0.0.1:port, [::]:port, NOTE: fixed!
-DISPATCHER_METRICS_PORT = 30441  # TCP/IP, 127.0.0.1:port, NOTE: also in scion-dispatcher.deb
+DISPATCHER_METRICS_PORT = 30441  # TCP/IP, 127.0.0.1:port
 
 SIG_CTRL_PORT = 30256
 SIG_DATA_PORT = 30056