Fix Yolov7 nuctl function deploy failure

[Bassileios]

• adds wget installation to build directives in yolov7 function-gpu.yaml
• the deployment fails because it tries to download the onnx model using wget, but is not installed in the base image ultralytics/yolov5:latest

Motivation and context

Fix issue #5730

How has this been tested?

By running the nuctl

#!/bin/bash
# Sample commands to deploy nuclio functions on GPU

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
FUNCTIONS_DIR=${1:-$SCRIPT_DIR}

nuctl create project cvat

shopt -s globstar

func_config="$FUNCTIONS_DIR/onnx/WongKinYiu/yolov7/nuclio/function-gpu.yaml"

echo "$func_config"
func_root=$(dirname "$func_config")
echo "Deploying $(dirname "$func_root") function..."
nuctl deploy --project-name cvat --path "$func_root" \
    --volume "$SCRIPT_DIR/common:/opt/nuclio/common" \
    --file "$func_config" --platform local


nuctl get function

Checklist

• I submit my changes into the develop branch
• I have added a description of my changes into the CHANGELOG file
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues (see GitHub docs)
• I have increased versions of npm packages if it is necessary
  (cvat-canvas,
  cvat-core,
  cvat-data and
  cvat-ui)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.

[nmanovic]

@Bassileios , thanks for the contribution!