Arm backend: Test and track resnet18 and resnet50 models in CI (#11638)

### Test plan
This adds tests for resnet18 and resnet50 for Ethos-U

Signed-off-by: Zingo Andersen <[email protected]>

Author: zingo

backends/arm/test/test_arm_baremetal.sh

@@ -195,6 +195,8 @@ test_models_ethos-u55() { # End to End model tests using model_test.py
     python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u55-128 --model=mv2  --extra_flags="-DET_ATOL=2.00 -DET_RTOL=2.00"
     python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u55-64  --model=mv3  --extra_flags="-DET_ATOL=5.00 -DET_RTOL=5.00"
     python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u55-256 --model=lstm --extra_flags="-DET_ATOL=0.03 -DET_RTOL=0.03"
+    python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u55-128 --model=resnet18 --extra_flags="-DET_ATOL=0.2 -DET_RTOL=0.2"
+    python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u55-128 --model=resnet50 --extra_flags="-DET_ATOL=0.2 -DET_RTOL=0.2"
 
     echo "${TEST_SUITE_NAME}: PASS"
     }
@@ -212,6 +214,8 @@ test_models_ethos-u85() { # End to End model tests using model_test.py
     python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u85-128 --model=lstm --extra_flags="-DET_ATOL=0.03 -DET_RTOL=0.03"
     python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u85-128 --model=w2l --extra_flags="-DET_ATOL=0.01 -DET_RTOL=0.01"
     python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u85-256 --model=ic4 --extra_flags="-DET_ATOL=0.8 -DET_RTOL=0.8" --timeout=2400
+    python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u85-128 --model=resnet18 --extra_flags="-DET_ATOL=0.2 -DET_RTOL=0.2"
+    python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --target=ethos-u85-128 --model=resnet50 --extra_flags="-DET_ATOL=0.2 -DET_RTOL=0.2"
 
     echo "${TEST_SUITE_NAME}: PASS"
     }