[Thinkit] Add DSCP/scheduling test case. (sonic-net#916)

Co-authored-by: kishanps <[email protected]>
Co-authored-by: smolkaj <[email protected]>

tests/qos/BUILD.bazel

@@ -96,11 +96,15 @@ cc_library(
         ":qos_test_util",
 	"//dvaas:test_vector_cc_proto",
         "//gutil:collections",
+        "//gutil:proto",
+        "//gutil:status",
         "//gutil:status_matchers",
         "//gutil:testing",
 	"//lib:ixia_helper",
         "//lib/gnmi:gnmi_helper",
+        "//lib/utils:json_utils",
         "//p4_pdpi:ir",
+        "//p4_pdpi:ir_cc_proto",
         "//p4_pdpi:p4_runtime_session",
 	"//p4_pdpi:pd",
         "//p4_pdpi/netaddr:ipv4_address",
@@ -113,10 +117,14 @@ cc_library(
         "//tests/lib:switch_test_setup_helpers",
         "//thinkit:generic_testbed",
         "//thinkit:generic_testbed_fixture",
+        "@com_github_gnmi//proto/gnmi:gnmi_cc_grpc_proto",
         "@com_github_p4lang_p4runtime//:p4info_cc_proto",
-	"@com_google_absl//absl/cleanup",
+        "@com_github_p4lang_p4runtime//:p4runtime_cc_proto",
+        "@com_google_absl//absl/cleanup",
+        "@com_google_absl//absl/container:flat_hash_map",
         "@com_google_absl//absl/status",
         "@com_google_absl//absl/strings",
+        "@com_google_absl//absl/strings:str_format",
         "@com_google_absl//absl/time",
         "@com_google_googletest//:gtest",
     ],