Bump minimum grpcio version to v1.30.0

Author: lidizheng

noxfile.py

@@ -80,7 +80,7 @@ def default(session):
     )
 
     # Install all test dependencies, then install this package in-place.
-    session.install("mock", "pytest", "pytest-cov", "grpcio >= 1.0.2")
+    session.install("mock", "pytest", "pytest-cov", "grpcio >= 1.30.0")
     session.install("-e", ".", "-c", constraints_path)
 
     pytest_args = [
@@ -142,7 +142,7 @@ def lint_setup_py(session):
 def pytype(session):
     """Run type-checking."""
     session.install(
-        ".", "grpcio >= 1.8.2", "grpcio-gcp >= 0.2.2", "pytype >= 2019.3.21"
+        ".", "grpcio >= 1.30.0", "grpcio-gcp >= 0.2.2", "pytype >= 2019.3.21"
     )
     session.run("pytype")
 
@@ -163,7 +163,7 @@ def cover(session):
 def docs(session):
     """Build the docs for this library."""
 
-    session.install(".", "grpcio >= 1.8.2", "grpcio-gcp >= 0.2.2")
+    session.install(".", "grpcio >= 1.30.0", "grpcio-gcp >= 0.2.2")
     session.install("-e", ".")
     session.install("sphinx==4.0.1", "alabaster", "recommonmark")
 

setup.py

@@ -40,7 +40,7 @@
     'futures >= 3.2.0; python_version < "3.2"',
 ]
 extras = {
-    "grpc": "grpcio >= 1.29.0, < 2.0dev",
+    "grpc": "grpcio >= 1.30.0, < 2.0dev",
     "grpcgcp": "grpcio-gcp >= 0.2.2",
     "grpcio-gcp": "grpcio-gcp >= 0.2.2",
 }

testing/constraints-3.6.txt

@@ -12,6 +12,6 @@ requests==2.18.0
 setuptools==40.3.0
 packaging==14.3
 six==1.13.0
-grpcio==1.29.0
+grpcio==1.30.0
 grpcio-gcp==0.2.2
 grpcio-gcp==0.2.2