[P4_Symbolic] Introduce new unsupported tunnel_decap action.

[ksravani-hcl]

Keyword Check:
~/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 690 targets (0 packages loaded, 0 targets configured).
INFO: Found 690 targets...
INFO: From Compiling p4_symbolic/tests/symbolic_table_entries_test.cc:
In file included from ./p4_symbolic/z3_util.h:26,
from ./p4_symbolic/symbolic/symbolic.h:36,
from ./p4_symbolic/sai/sai.h:25,
from p4_symbolic/tests/symbolic_table_entries_test.cc:46:
./p4_pdpi/string_encodings/bit_string.h: In member function 'void pdpi::BitString::AppendBytes(absl::lts_20230802::string_view)':
./p4_pdpi/string_encodings/bit_string.h:55:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::basic_string_view::size_type' {aka 'long unsigned int'} [-Wsign-compare]
55 | for (int i = 0; i < bytes.size(); i++) {
| ~~^~~~~~~~~~~~~~
./p4_pdpi/string_encodings/bit_string.h: In instantiation of 'void pdpi::BitString::AppendBits(const std::bitset<_Nb>&) [with long unsigned int num_bits = 8]':
./p4_pdpi/string_encodings/bit_string.h:41:50: required from here
./p4_pdpi/string_encodings/bit_string.h:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare]
49 | for (int i = 0; i < num_bits; i++) {
| ~~^~~~~~~~~~
INFO: Elapsed time: 12.857s, Critical Path: 12.08s
INFO: 3 processes: 1 internal, 2 linux-sandbox.
INFO: Build completed successfully, 3 total actions

Test Result:
/sonic/src/sonic-p4rt/sonic-pins$ bazel test $BAZEL_BUILD_OPTS --cache_test_results=no ...
INFO: Analyzed 690 targets (0 packages loaded, 0 targets configured).
INFO: Found 473 targets and 217 test targets...
INFO: From Compiling p4_symbolic/tests/symbolic_table_entries_test.cc:
In file included from ./p4_symbolic/z3_util.h:26,
from ./p4_symbolic/symbolic/symbolic.h:36,
from ./p4_symbolic/sai/sai.h:25,
from p4_symbolic/tests/symbolic_table_entries_test.cc:46:
./p4_pdpi/string_encodings/bit_string.h: In member function 'void pdpi::BitString::AppendBytes(absl::lts_20230802::string_view)':
./p4_pdpi/string_encodings/bit_string.h:55:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::basic_string_view::size_type' {aka 'long unsigned int'} [-Wsign-compare]
55 | for (int i = 0; i < bytes.size(); i++) {
| ~~^~~~~~~~~~~~~~
./p4_pdpi/string_encodings/bit_string.h: In instantiation of 'void pdpi::BitString::AppendBits(const std::bitset<_Nb>&) [with long unsigned int num_bits = 8]':
./p4_pdpi/string_encodings/bit_string.h:41:50: required from here
./p4_pdpi/string_encodings/bit_string.h:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare]
49 | for (int i = 0; i < num_bits; i++) {
| ~~^~~~~~~~~~
INFO: Elapsed time: 183.346s, Critical Path: 121.65s
INFO: 272 processes: 327 linux-sandbox, 18 local.
INFO: Build completed successfully, 272 total actions
//dvaas:port_id_map_test PASSED in 0.8s
//dvaas:test_run_validation_golden_test PASSED in 0.1s
//dvaas:test_run_validation_test PASSED in 0.6s
//dvaas:test_run_validation_test_runner PASSED in 0.0s
//dvaas:test_vector_stats_diff_test PASSED in 0.1s
//p4rt_app/tests:resource_limits_test PASSED in 2.8s
//p4rt_app/tests:response_path_test PASSED in 5.7s
//p4rt_app/tests:role_test PASSED in 1.5s
//p4rt_app/tests:state_verification_test PASSED in 3.4s
//p4rt_app/tests:vrf_table_test PASSED in 2.7s
//p4rt_app/tests/lib:app_db_entry_builder_test PASSED in 0.0s
//p4rt_app/utils:event_data_tracker_test PASSED in 0.1s
//p4rt_app/utils:table_utility_test PASSED in 0.7s
//sai_p4/instantiations/google:clos_stage_test PASSED in 0.5s
//sai_p4/instantiations/google:fabric_border_router_p4info_up_to_date_test PASSED in 0.0s
//sai_p4/instantiations/google:middleblock_p4info_up_to_date_test PASSED in 0.0s
//sai_p4/instantiations/google:sai_nonstandard_platforms_build_test PASSED in 0.1s
//sai_p4/instantiations/google:sai_nonstandard_platforms_cc_test PASSED in 0.6s
//sai_p4/instantiations/google:sai_p4info_fetcher_test PASSED in 0.7s
//sai_p4/instantiations/google:sai_p4info_test PASSED in 1.2s
//sai_p4/instantiations/google:sai_pd_proto_test PASSED in 0.0s
//sai_p4/instantiations/google:sai_pd_util_test PASSED in 0.6s
//sai_p4/instantiations/google:tor_p4info_up_to_date_test PASSED in 0.0s
//sai_p4/instantiations/google:union_p4info_up_to_date_test PASSED in 0.1s
//sai_p4/instantiations/google:wbb_p4info_up_to_date_test PASSED in 0.0s
//sai_p4/instantiations/google/test_tools:table_entry_generator_helper_test PASSED in 1.5s
//sai_p4/instantiations/google/test_tools:test_entries_test PASSED in 1.0s
//sai_p4/instantiations/google/tests:p4_fuzzer_integration_test PASSED in 3.6s
//sai_p4/tools:p4info_tools_test PASSED in 0.6s
//sai_p4/tools:packetio_tools_test PASSED in 0.8s
//tests:thinkit_gnmi_interface_util_tests PASSED in 1.1s
//tests/lib:p4info_helper_test PASSED in 0.8s
//tests/lib:p4rt_fixed_table_programming_helper_test PASSED in 1.0s
//tests/lib:packet_generator_test PASSED in 27.1s
//tests/lib:switch_test_setup_helpers_golden_test PASSED in 0.1s
//tests/lib:switch_test_setup_helpers_golden_test_runner PASSED in 0.1s
//tests/qos:gnmi_parsers_test PASSED in 0.1s
//tests/qos:gnmi_parsers_test_runner PASSED in 0.0s
//tests/sflow:sflow_util_test PASSED in 6.9s
//thinkit:bazel_test_environment_test PASSED in 0.6s
//thinkit:generic_testbed_test PASSED in 0.9s
//thinkit:mock_control_device_test PASSED in 0.6s
//thinkit:mock_generic_testbed_test PASSED in 0.7s
//thinkit:mock_mirror_testbed_test PASSED in 0.7s
//thinkit:mock_ssh_client_test PASSED in 0.0s
//thinkit:mock_switch_test PASSED in 0.7s
//thinkit:mock_test_environment_test PASSED in 0.1s
//thinkit:switch_test PASSED in 0.7s
//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 44.2s
Stats over 50 runs: max = 44.2s, min = 0.8s, avg = 6.5s, dev = 13.8s

Executed 217 out of 217 tests: 217 tests pass.
INFO: Build completed successfully, 272 total actions

[mssonicbld]

/azp run

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[ksravani-hcl]

Co-authored-by: Srikishen Pondicherry Shanmugam [email protected]

[jaanah-hcl]

@kishanps Kindly review the PR
Thanks

[mssonicbld]

/azp run

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[mssonicbld]

/azp run

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