[fuzzer] Move tests into pins_infra/tests/forwarding.

[VSuryaprasad-HCL]

Keyword Check:

/pins_upstream/sonic-buildimage/src/sonic-p4rt/sonic-pins$ ~/tools/keyword_checks.sh .
Keyword check Passed.

Build result:

/sonic/src/sonic-p4rt/sonic-pins$ bazel build $BAZEL_BUILD_OPTS ...
INFO: Analyzed 535 targets (0 packages loaded, 0 targets configured).
INFO: Found 535 targets...
INFO: Elapsed time: 4.207s, Critical Path: 0.01s
INFO: 1 process: 1 internal.
INFO: Build completed successfully, 1 total action
surya@3ed458debf91:

Test result:

/sonic/src/sonic-p4rt/sonic-pins$ bazel test $BAZEL_BUILD_OPTS --cache_test_results=no ...
INFO: Analyzed 535 targets (0 packages loaded, 332 targets configured).
INFO: Found 359 targets and 176 test targets...
INFO: Elapsed time: 183.854s, Critical Path: 118.91s
INFO: 230 processes: 265 linux-sandbox, 18 local.
INFO: Build completed successfully, 230 total actions
//gutil:collections_test                                                 PASSED in 0.7s
//gutil:io_test                                                          PASSED in 0.5s
//gutil:proto_matchers_test                                              PASSED in 0.7s
//gutil:proto_ordering_test                                              PASSED in 0.7s
//gutil:proto_test                                                       PASSED in 0.6s
//gutil:status_matchers_test                                             PASSED in 0.6s
//gutil:test_artifact_writer_test                                        PASSED in 0.8s
//gutil:testing_test                                                     PASSED in 0.6s
//gutil:timer_test                                                       PASSED in 5.1s
//gutil:version_test                                                     PASSED in 1.1s
//lib:basic_switch_test                                                  PASSED in 1.4s
//thinkit:bazel_test_environment_test                                    PASSED in 0.7s
//thinkit:generic_testbed_test                                           PASSED in 0.9s
//thinkit:mock_control_device_test                                       PASSED in 0.6s
//thinkit:mock_generic_testbed_test                                      PASSED in 1.6s
//thinkit:mock_mirror_testbed_test                                       PASSED in 0.8s
//thinkit:mock_ssh_client_test                                           PASSED in 0.0s
//thinkit:mock_switch_test                                               PASSED in 0.9s
//thinkit:mock_test_environment_test                                     PASSED in 0.1s
//thinkit:switch_test                                                    PASSED in 0.8s
//sai_p4/instantiations/google/tests:p4_constraints_integration_test     PASSED in 0.9s
  Stats over 5 runs: max = 0.9s, min = 0.7s, avg = 0.8s, dev = 0.1s
//sai_p4/instantiations/google/test_tools:table_entry_generator_test     PASSED in 44.4s
  Stats over 50 runs: max = 44.4s, min = 0.8s, avg = 4.3s, dev = 11.6s

Executed 176 out of 176 tests: 176 tests pass.
INFO: Build completed successfully, 230 total actions