CherryPicked: [cnv-4.22] net, tests, hot-plug: Avoid redundant VMI interface lookup - #5955

pytest-check-arm64: OK ✔ in 1 minute 36.57 seconds
pytest-check-s390x: OK ✔ in 1 minute 36.79 seconds
utilities-unittests: OK ✔ in 1 minute 45.76 seconds
pytest-check-multiarch: OK ✔ in 2 minutes 3.66 seconds
unused-code: OK ✔ in 4 minutes 1.66 seconds
  pytest-check-x86: OK (597.20=setup[27.11]+cmd[69.11,17.36,15.27,10.57,8.07,7.00,13.35,9.98,419.38] seconds)
  pytest-check-arm64: OK (96.57=setup[26.01]+cmd[70.56] seconds)
  pytest-check-s390x: OK (96.79=setup[24.95]+cmd[71.84] seconds)
  pytest-check-multiarch: OK (123.66=setup[28.71]+cmd[62.23,13.37,19.35] seconds)
  unused-code: OK (241.66=setup[192.20]+cmd[49.46] seconds)
  utilities-unittests: OK (105.76=setup[23.09]+cmd[82.24,0.43] seconds)
  congratulations :) (597.67 seconds)