### Why I did it
Remove UpdateGraphService feature from sonic image. The goal is to simplify the bootup process.
### How I did it
Remove updategraph service and updategraph script.
Update all related services, replace updategraph.service with config-setup.service.
#### How to verify it
Build and install new image, load minigraph and check all the services.
copp-config service needs to be started after sonic.target so that it could
render the copp-config with the latest information.
It also needs to be restarted when config reload or load_minigraph is invoked.
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
*Removed execute permissions from the systemd copp-config.service file.
Without this we will get a warning: "Configuration file /lib/systemd/system/copp-config.service is marked executable. Please remove executable permission bits. Proceeding anyway."
