[Snappi]: Replace the dut.shell with dut.command for clear_counter function in common_helpers.py file.

[amitpawar12]

Issue Description

Function clear_counter has dut.shell used to clear the counters. The shell, however, has in-built sudo usage, and hence needs to be replaced with dut.command to ensure counters with and without sudo are cleared.

Results you see

The SUDO counters are cleared using this function. Needs to be replaced with dut.command.

Results you expected to see

The normal counters (without sudo) and sudo counters needs to be cleared. Right now, only sudo counters are getting cleared.

Is it platform specific

generic

Relevant log output

No response

Output of show version

No response

Attach files (if any)

No response

[yxieca]

@sdszhang @developfast for viz.

@yejianquan @wangxin @StormLiangMS can we prevent these scenarios from infrastructure unit tests?

[yxieca]

@prsunny @qiluo-msft I am feeling that there might be a gap between the design and test infrastructure. How do we find a way to close/prevent such gap going forward?

[qiluo-msft]

@amitpawar12 Could you explain more details about "The normal counters (without sudo) and sudo counters needs to be cleared". Are you able to reproduce the difference by 2 commands on sonic directly? not by any sonic-mgmt testcase.