chore: exclude GAPIC tests from coverage report and set the threshold to 85%

FUTURE_COPYBARA_INTEGRATE_REVIEW=#3966 from googleapis:release-please--branches--main 98e236c
PiperOrigin-RevId: 647090378

Author: yinghsienwu

.coveragerc

@@ -4,8 +4,11 @@ branch = True
 [report]
 show_missing = True
 omit =
-    google/cloud/aiplatform/v1/schema/trainingjob/definition/__init__.py
     google/cloud/aiplatform/vizier/pyvizier/*
+    google/cloud/aiplatform_v1/*
+    google/cloud/aiplatform_v1beta1/*
+    google/cloud/aiplatform/v1/schema/*
+    google/cloud/aiplatform/v1beta1/schema/*
 exclude_lines =
     # Re-enable the standard pragma
     pragma: NO COVER

noxfile.py

@@ -328,7 +328,7 @@ def cover(session):
     test runs (not system test runs), and then erases coverage data.
     """
     session.install("coverage", "pytest-cov")
-    session.run("coverage", "report", "--show-missing", "--fail-under=98")
+    session.run("coverage", "report", "--show-missing", "--fail-under=85")
 
     session.run("coverage", "erase")