UT coverage to 95%, code improve and minor fix#34

Merged

jcaiMR merged 3 commits intosonic-net:masterfrom jcaiMR:dev/dhcprelay_ut_improve_new

May 13, 2023

+358-137

Commits on Mar 17, 2023

global mock, ut coverage to 95%, code cleanup and refine
jcaiMR
committed

Commits on May 7, 2023

Update package cache, and bail on the first error (sonic-net#35 )

saiarcot895
authored and
Ubuntu
committed
adjust printf format
jcaiMR
committed