chore: refactored p4 test

src/tests/p4-fwd-l1/README.md

src/tests/p4-fwd-l1/__init__.py

src/tests/p4-fwd-l1/deploy_specs.sh

src/tests/p4-fwd-l1/mininet/1switch1path.py

src/tests/p4-fwd-l1/mininet/2switch1path.py

src/tests/p4-fwd-l1/mininet/4switch2path.py

src/tests/p4-fwd-l1/mininet/6switch2path.py

src/tests/p4-fwd-l1/mininet/8switch3path.py

src/tests/p4-fwd-l1/p4/bmv2.json

src/tests/p4-fwd-l1/p4/main.p4

src/tests/p4-fwd-l1/p4/p4info.txt

src/tests/p4-fwd-l1/probe/README.md

src/tests/p4-fwd-l1/probe/monitoring_kpis.ipynb

src/tests/p4-fwd-l1/probe/monitoring_kpis.py

src/tests/p4-fwd-l1/probe/probe-tfs/.gitignore

src/tests/p4-fwd-l1/probe/probe-tfs/Cargo.toml

src/tests/p4-fwd-l1/probe/probe-tfs/LICENSE

src/tests/p4-fwd-l1/probe/probe-tfs/README.md

src/tests/p4-fwd-l1/probe/probe-tfs/build.rs

src/tests/p4-fwd-l1/probe/probe-tfs/connect_to_mininet.sh