fix: add missing metadata. (#1335)

* fix: add missing metadata.

* chore: update dep.

* chore: remove flaky setup.

Author: Aza Tulepbergenov

packages/gapic-generator/gapic/templates/%namespace/%name_%version/%sub/services/%service/_async_mixins.py.j2

@@ -258,7 +258,12 @@
             client_info=DEFAULT_CLIENT_INFO,
         )
 
-        metadata = tuple(metadata)
+        # Certain fields should be provided within the metadata header;
+        # add these here.
+        metadata = tuple(metadata) + (
+            gapic_v1.routing_header.to_grpc_metadata(
+                (("name", request.name),)),
+        )
 
         # Send the request.
         response = await rpc(

packages/gapic-generator/gapic/templates/%namespace/%name_%version/%sub/services/%service/_mixins.py.j2

@@ -256,7 +256,12 @@
             client_info=DEFAULT_CLIENT_INFO,
         )
 
-        metadata = tuple(metadata)
+        # Certain fields should be provided within the metadata header;
+        # add these here.
+        metadata = tuple(metadata) + (
+            gapic_v1.routing_header.to_grpc_metadata(
+                (("name", request.name),)),
+        )
 
         # Send the request.
         response = rpc(

packages/gapic-generator/noxfile.py

@@ -347,16 +347,6 @@ def showcase_unit_alternative_templates(session):
 def showcase_unit_add_iam_methods(session):
     with showcase_library(session, other_opts=("add-iam-methods",)) as lib:
         session.chdir(lib)
-
-        # Unit tests are run twice with different dependencies.
-        # 1. Run tests at lower bound of dependencies.
-        session.install("nox")
-        session.run("nox", "-s", "update_lower_bounds")
-        session.install(".", "--force-reinstall", "-c", "constraints.txt")
-        run_showcase_unit_tests(session, fail_under=0)
-
-        # 2. Run the tests again with latest version of dependencies.
-        session.install(".", "--upgrade", "--force-reinstall")
         run_showcase_unit_tests(session, fail_under=100)