rumba: Remove irati/rlite, python2 and qemu support

Remove IRATI and rlite prototype plugins, keeping only Ouroboros.
Delete .gitlab-ci.yml (only contained an irati test job and a
Sphinx pages job). Clean up all irati/rlite imports and references
from examples, documentation, and tools.

Qemu was tied heavily with rlite and irati. As it's less useful for
ouroboros it's removed rather than reworked.

Updated README.md and AUTHORS

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>

7 files changed, 15 insertions, 47 deletions

diff --git a/doc/irati.rst b/doc/irati.rst
deleted file mode 100644
index 0ad496a..0000000
--- a/doc/irati.rst
+++ /dev/null
@@ -1,11 +0,0 @@
-IRATI
-=============
-
-`IRATI <https://github.com/IRATI/stack>`_ is an open source
-implementation of the RINA architecture targeted at the OS/Linux
-system, initially developed by the FP7-IRATI project.
-
-.. automodule:: rumba.prototypes.irati
-    :member-order: bysource
-    :show-inheritance:
-    :inherited-members:
diff --git a/doc/model.rst b/doc/model.rst
index 1ced817..454de7e 100644
--- a/doc/model.rst
+++ b/doc/model.rst
@@ -6,13 +6,21 @@ blocks listed below.
 
 .. autoclass:: rumba.model.Node
 
-.. autoclass:: rumba.model.DIF
+.. autoclass:: rumba.model.Layer
 
-.. autoclass:: rumba.model.NormalDIF
+.. autoclass:: rumba.model.UnicastLayer
 
-.. autoclass:: rumba.model.ShimUDPDIF
+.. autoclass:: rumba.model.BroadcastLayer
 
-.. autoclass:: rumba.model.ShimEthDIF
+.. autoclass:: rumba.model.EthDixLayer
+
+.. autoclass:: rumba.model.EthLlcLayer
+
+.. autoclass:: rumba.model.Udp4Layer
+
+.. autoclass:: rumba.model.Udp6Layer
+
+.. autoclass:: rumba.model.LocalLayer
 
 .. autoclass:: rumba.model.Distribution
 
diff --git a/doc/prototype.rst b/doc/prototype.rst
index a827dcb..0a17719 100644
--- a/doc/prototype.rst
+++ b/doc/prototype.rst
@@ -10,6 +10,4 @@ provided by the base class.
 Specific implementations of the Testbed class:
 
 .. toctree::
-    irati
-    rlite
     ouroboros
diff --git a/doc/qemu.rst b/doc/qemu.rst
deleted file mode 100644
index 375ab55..0000000
--- a/doc/qemu.rst
+++ /dev/null
@@ -1,15 +0,0 @@
-QEMU
-=============
-
-`QEMU <http://wiki.qemu-project.org/Main_Page>`_ is a generic and open
-source machine emulator and virtualizer.
-
-In order to use the qemu testbed, the user should install the qemu and
-bridge-utils packages on which the testbed depends: ::
-
-     $ sudo apt-get install bridge-utils qemu
-
-.. automodule:: rumba.testbeds.qemu
-    :member-order: bysource
-    :show-inheritance:
-    :inherited-members:
diff --git a/doc/rlite.rst b/doc/rlite.rst
deleted file mode 100644
index 171c4b8..0000000
--- a/doc/rlite.rst
+++ /dev/null
@@ -1,11 +0,0 @@
-rlite
-=============
-
-`rlite <https://gitlab.com/arcfire/rlite>`_ is a lightweight Free
-and Open Source implementation of the Recursive InterNetwork
-Architecture (RINA) for GNU/Linux operating systems.
-
-.. automodule:: rumba.prototypes.rlite
-    :member-order: bysource
-    :show-inheritance:
-    :inherited-members:
diff --git a/doc/testbed.rst b/doc/testbed.rst
index 0158904..45ac2c8 100644
--- a/doc/testbed.rst
+++ b/doc/testbed.rst
@@ -14,4 +14,3 @@ Specific implementations of the Testbed class:
     emulab
     jfed
     local
-    qemu
diff --git a/doc/workflow.rst b/doc/workflow.rst
index d0e56a7..1c35b91 100644
--- a/doc/workflow.rst
+++ b/doc/workflow.rst
@@ -2,14 +2,14 @@ Workflow
 ************************
 
 1. Define the network graph, creating instances of model.Node and
-   model.DIF classes. Experiments can import rumba.model to obtain all
+   model.Layer classes. Experiments can import rumba.model to obtain all
    Rumba classes needed to run an experiment.
 
-2. Create an instance of a specific model.Testbed class (QEMU, Docker,
+2. Create an instance of a specific model.Testbed class (Docker,
    Local, Emulab or jFed).
 
 3. Create an instance of the selected prototype.Experiment class
-   (Ouroboros, rlite, IRATI), passing the testbed instance and a list
+   (Ouroboros), passing the testbed instance and a list
    of Node instances.
 
   * At the end of the base Experiment constructor, the