Fix test cases for Azure Linux

[bhagyapathak]

Fixes verify_reload_hyperv_modules, stress_tlb_basic, stress_tlb_stressng test cases

[bhagyapathak]

verify_reload_hyperv_modules - https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1000788&view=logs&j=528a33a8-464e-565a-7855-df1244039b47&t=058e2008-14ce-5f48-014b-5e3092b59979

stress_tlb_basic - https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1000753&view=logs&j=528a33a8-464e-565a-7855-df1244039b47&t=058e2008-14ce-5f48-014b-5e3092b59979

[kanchansenlaskar]

@bhagyapathak, As discussed offline, this change in lisa/tools/modprobe.py is causing a regression as the chown command is being run without waiting for the vm connectivity to come up or waiting for the reload process to finish. Kindly either:

1. pass sudo=True in this line: cat.read(loop_process_pid_file_name, force_run=True)
   or
2. move the chown command inside the try section of the while loop.

I prefer the 1st option, and then please test it.
cc: @LiliDeng