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#### What I did
The PR sonic-net/sonic-utilities#3960 check the docker container's name.
Check the docker's name whether is exactly same with "bgp"
However, on multiple asic devices, there are several bgp containers, and named bgp0, bgp1 ....

#### How I did it
Modified the cmd to handle the multiple asic with several bgp containers.

#### How to verify it
run the cmd manually on both multiple and single asic device
sonic-net/sonic-utilities#3980

#### Previous command output (if the output of a command-line utility has changed)

#### New command output (if the output of a command-line utility has changed)