fix: refactoring of p4 fabric tna testing suite

src/service/service/service_handlers/__init__.py

src/service/service/service_handlers/p4_dummy_l1/__init__.py

...rvice_handlers/p4_dummy_l1/p4_dummy_l1_service_handler.py

src/tests/p4-fabric-tna/README.md

src/tests/p4-fabric-tna/__init__.py

...tests/p4-fabric-tna/descriptors/sbi-rules-insert-acl.json

...ts/p4-fabric-tna/descriptors/sbi-rules-insert-int-b1.json

...ts/p4-fabric-tna/descriptors/sbi-rules-insert-int-b2.json

...ts/p4-fabric-tna/descriptors/sbi-rules-insert-int-b3.json

...fabric-tna/descriptors/sbi-rules-insert-routing-corp.json

...fabric-tna/descriptors/sbi-rules-insert-routing-edge.json

src/tests/p4-fabric-tna/descriptors/sbi-rules-remove.json

src/tests/p4-fabric-tna/descriptors/topology.json

src/tests/p4-fabric-tna/p4src/README.md

src/tests/p4-fabric-tna/p4src/_pp.p4

src/tests/p4-fabric-tna/p4src/bmv2.json

src/tests/p4-fabric-tna/p4src/p4info.txt

src/tests/p4-fabric-tna/run_test_01_bootstrap.sh

...p4-fabric-tna/run_test_02a_sbi_provision_int_l2_l3_acl.sh

...-fabric-tna/run_test_02b_sbi_deprovision_int_l2_l3_acl.sh