docs: better docs, mv doxygen to sphinx

This patch refactors the VPP sphinx docs
in order to make it easier to consume
for external readers as well as VPP developers.

It also makes sphinx the single source
of documentation, which simplifies maintenance
and operation.

Most important updates are:

- reformat the existing documentation as rst
- split RELEASE.md and move it into separate rst files
- remove section 'events'
- remove section 'archive'
- remove section 'related projects'
- remove section 'feature by release'
- remove section 'Various links'
- make (Configuration reference, CLI docs,
  developer docs) top level items in the list
- move 'Use Cases' as part of 'About VPP'
- move 'Troubleshooting' as part of 'Getting Started'
- move test framework docs into 'Developer Documentation'
- add a 'Contributing' section for gerrit,
  docs and other contributer related infos
- deprecate doxygen and test-docs targets
- redirect the "make doxygen" target to "make docs"

Type: refactor

Change-Id: I552a5645d5b7964d547f99b1336e2ac24e7c209f
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>

1 files changed, 0 insertions, 59 deletions

diff --git a/docs/reference/cmdreference/trace/trace.rst b/docs/reference/cmdreference/trace/trace.rst
deleted file mode 100644
index 927342fa3d7..00000000000
--- a/docs/reference/cmdreference/trace/trace.rst
+++ /dev/null
@@ -1,59 +0,0 @@
-.. _interface:
-
-.. toctree::
-
-.. note:: For a complete list of CLI Debug commands refer to the Debug CLI section of the `Source Code Documents <https://docs.fd.io/vpp/18.07/clicmd.html>`_ .
-
-
-API Trace
-===========
-
-Summary/Usage
---------------
-
-api trace [tx][on|off][first <n>][last <n>][status][free]
-	[post-mortem-on][dump|dump-file|dump-json|save|tojson|save-json|replay <file>][nitems <n>][initializers <file>]
-
-Description
-------------
-
-Display, replay, or save a binary API trace.
-
-Declaration and Implementation
--------------------------------
-
-**Declaration:** api_trace_command (src/vlibmemory/vlib_api_cli.c line 783)
-
-**Implementation:** api_trace_command_fn
-
-Clear Trace
-=============
-
-Summary/Usage
---------------
-Clear trace buffer and free memory.
-Declaration and implementation
-
-**Declaration:** clear_trace_cli (src/vlib/trace.c line 519)
-
-**Implementation:** cli_clear_trace_buffer
-
-Show Trace
-===========
-
-`Show Trace <../show/show.html#show-trace>`_
-
-Trace Add
-===========
-
-Summary/Usage
---------------
-
-Trace given number of packets.
-
-Declaration and Implementation
--------------------------------
-
-**Declaration:** add_trace_cli (src/vlib/trace.c line 405)
-
-**Implementation:** cli_add_trace_buffer