Fix openvino model generation in Frigate install script (#2762)

* get pip from APT

* Add openvino model conversion to make it readily available

install/frigate-install.sh

@@ -18,9 +18,7 @@ $STD apt-get install -y {curl,sudo,mc,git,gpg,automake,build-essential,xz-utils,
 msg_ok "Installed Dependencies"
 
 msg_info "Installing Python3 Dependencies"
-$STD apt-get install -y {python3,python3-dev,python3-setuptools,python3-distutils}
+$STD apt-get install -y {python3,python3-dev,python3-setuptools,python3-distutils,python3-pip}
-wget -q https://bootstrap.pypa.io/get-pip.py -O get-pip.py
-$STD python3 get-pip.py --quiet "pip"
 msg_ok "Installed Python3 Dependencies"
 
 msg_info "Installing Node.js"
@@ -104,7 +102,8 @@ msg_info "Installing Object Detection Models (Resilience)"
 $STD pip install -r /opt/frigate/docker/main/requirements-ov.txt
 cd /opt/frigate/models
 export ENABLE_ANALYTICS=NO
-$STD /usr/local/bin/omz_downloader --name ssdlite_mobilenet_v2
+$STD /usr/local/bin/omz_downloader --name ssdlite_mobilenet_v2 --num_attempts 2
+$STD /usr/local/bin/omz_converter --name ssdlite_mobilenet_v2 --precision FP16 --mo /usr/local/bin/mo
 cd ..
 export CCACHE_DIR=/root/.ccache
 export CCACHE_MAXSIZE=2G