[config] Add support for multi-ASIC devices#877

Merged

judyjoseph merged 8 commits intosonic-net:masterfrom judyjoseph:config_cmds

May 2, 2020

+260-38

Commits on Apr 10, 2020

[Phase 1] Multi ASIC config command changes, db_mgrator.py script updates for handing namespace.
judyjoseph
committed
Fixes and comment updates
judyjoseph
committed

Commits on Apr 19, 2020

Comments addressed + added support for user to input the config files per namespace also.
judyjoseph
committed

Commits on Apr 26, 2020

Updates per comments + based on the updated SonicV2Connector/ConfigDBConnector class design
judyjoseph
committed

Commits on May 1, 2020