docs: refresh & structure overhaul

Rework the doc in order to improve the navigation experience and to make
it easier to update the doc:

- simplify structure: docs/{release-notes,user,developer}
- recreate sphinx config file
- switch theme from opnfv to piccolo
- fix minor rst issues
- fix external references
- add missing license headers (add a short header with copyright and
  SPDX license identifier to the files lacking the information.  The
  header is based on https://github.com/david-a-wheeler/spdx-tutorial)

Change-Id: I9a1135a2873d9955beb26760e0cb6c5d6c1326bd
Signed-off-by: Gwenael Lambrouin <gwenael.lambrouin@orange.com>

1 files changed, 0 insertions, 94 deletions

diff --git a/docs/release/release-notes/nfvbenchvm-release-notes.rst b/docs/release/release-notes/nfvbenchvm-release-notes.rst
deleted file mode 100644
index 234a086..0000000
--- a/docs/release/release-notes/nfvbenchvm-release-notes.rst
+++ /dev/null
@@ -1,94 +0,0 @@
-.. This work is licensed under a Creative Commons Attribution 4.0 International License.
-.. http://creativecommons.org/licenses/by/4.0
-
-
-NFVbench Loop VM Image Release Notes
-++++++++++++++++++++++++++++++++++++
-
-As explained in :ref:`nfvbench-artefact-versioning`, NFVbench loop VM image has
-its own version numbering scheme.  Starting from version 0.11, this page
-summarizes the news of each release.
-
-
-Release 0.16 (2022-11-15)
-=========================
-
-Fixes:
-
-- Increase wait for VPP service from 10 to 30 seconds (10s is not enough on some
-  setups) and poll every second instead of sleeping 10s.
-
-- Set the MTU of the management interface to 1500 by default (to reduce the risk
-  to get an unmanageable VM).  A different value can be set using the
-  ``INTF_MGMT_MTU`` variable in ``/etc/nfvbenchvm.conf``.
-
-Changes for developers:
-
-- Add 2 debug features to ``build-image.sh``:
-
-  - The new option ``-t`` (enable debug traces) allows to show in the build log
-    the commands run in the shell scripts, including the commands defined in the
-    disk image builder elements.
-
-  - The new option ``-d`` (debug) instructs ``disk-image-create`` to drop the
-    developer in a shell inside the chroot in case an error occurs.  This makes
-    troubleshooting of the image possible (inspect files, run commands, ...)
-
-- Abort build on error: make sure a VM image build fails if any step fails.
-  Else we can end up with a bad image not containing all that we want, and we
-  discover this later at run time.
-
-- Fix build with diskimage_builder (dib) 3.16.0.
-
-- Switch VPP package repository to packagecloud.io instead of nexus.fd.io.  This
-  fixes intermittent access issues with nexus.fd.io and this will make it
-  possible to get vpp releases higher than 19.08.
-
-- Separate loop VM and generator VM version numbers (a first step towards using
-  nfvbench version number for the generator VM).
-
-
-Release 0.15 (2021-06-04)
-=========================
-
-- NFVBENCH-211 Fix VPP driver for loop VM (switch UIO driver for VPP forwarder:
-  use ``uio_pci_generic`` instead of ``igb_uio``).
-
-
-Release 0.14 (2021-05-21)
-=========================
-
-- NFVBENCH-209 Fix NFVbench loopvm build failed on testpmd step (includes switch
-  UIO driver for testmpd forwarder: use ``uio_pci_generic`` instead of
-  ``igb_uio``).
-
-
-Release 0.13 (2021-04-28)
-=========================
-
-- NFVBENCH-196: New NFVbench image for generator part (nfvbench and TRex codes inside VM)
-- Change Linux kernel boot-time configuration (kernel CLI parameters):
-
-  - Extend CPU isolation (``isolcpus=1-7`` instead of ``isolcpus=1``)
-  - Increase the number of 1GB huge pages (``hugepages=4`` instead of ``hugepages=2``)
-  - Enable IOMMU (``intel_iommu=on iommu=pt``)
-
-- Load the ``vfio-pci`` kernel module with the ``enable_unsafe_noiommu_mode=1`` option.
-
-
-Release 0.12 (2020-01-23)
-=========================
-
-- NFVBENCH-157 Add possibility to not use the ARP static configuration for VPP loop VM
-
-
-Release 0.11 (2019-11-26)
-=========================
-
-- NFVBENCH-156 Add management interface and ssh config in NFVBench image
-
-
-Earlier releases
-================
-
-See NFVbench commit history.