[swss]: Generate config files for Everflow and IPinIP from minigraph
- Add Everflow DST IP to minigraph file
- Extend minigraph.py to support Everflow
- Add templates file for Everflow and IPinIP configuration
- Add config.sh for swss docker to generate config files
- Update Broadcom libsaibcm debian package to 2.1.5.1-2
- Add SAI_NUM_ECMP_MEMBERS=32 to two Trident II platforms
- Update sonic-swss submodule version to support such changes
Signed-off-by: Shuotian Cheng <shuche@microsoft.com>
( All device-specific files now reside under /device directory in a <vendor-name>/<platform-string>/<hardware-SKU> directory structure in repo.
* Device-specific files are now packaged into a Debian package (sonic-device-data) and are now installed to /usr/share/sonic/device/<platform-string>/<hardware-SKU>/ directory on switch.
