Why I did it
Enable Test sai api on bfn container with a lightweight container(saiserver).
How I did it
enable saiserver container on barefoot platform.
add docker-saiserver-bfn.mk for building saiserver container
in platform/barefoot/docker-saiserver-bfn, add necessary files that needs in saiserver container
How to verify it
Tested on Intel platform ec9516
Signed-off-by: richardyu-ms <richard.yu@microsoft.com>
Signed-off-by: richardyu-ms <richard.yu@microsoft.com>
**- Why I did it**
We were building a custom version of Supervisor because I had added patches to prevent hangs and crashes if the system clock ever rolled backward. Those changes were merged into the upstream Supervisor repo as of version 3.4.0 (http://supervisord.org/changes.html#id9), therefore, we should be able to simply install the vanilla package via pip. This will also allow us to easily move to Python 3, as Python 3 support was added in version 4.0.0.
**- How I did it**
- Remove Makefiles and patches for building supervisor package from source
- Install Python 3 supervisor package version 4.2.1 in Buster base container
- Also install Python 3 version of supervisord-dependent-startup in Buster base container
- Debian package installed binary in `/usr/bin/`, but pip package installs in `/usr/local/bin/`, so rather than update all absolute paths, I changed all references to simply call `supervisord` and let the system PATH find the executable to prevent future need for changes just in case we ever need to switch back to build a Debian package, then we won't need to modify these again.
- Install Python 2 supervisor package >= 3.4.0 in Stretch and Jessie base containers
