add gcc8.3 portability test

templates/tools/dockerfile/test/cxx_buster_x64/Dockerfile.template

@@ -0,0 +1,26 @@
+%YAML 1.2
+--- |
+  # Copyright 2015 gRPC authors.
+  #
+  # Licensed under the Apache License, Version 2.0 (the "License");
+  # you may not use this file except in compliance with the License.
+  # You may obtain a copy of the License at
+  #
+  #     http://www.apache.org/licenses/LICENSE-2.0
+  #
+  # Unless required by applicable law or agreed to in writing, software
+  # distributed under the License is distributed on an "AS IS" BASIS,
+  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  # See the License for the specific language governing permissions and
+  # limitations under the License.
+  
+  FROM debian:buster
+  
+  <%include file="../../apt_get_basic.include"/>
+  <%include file="../../gcp_api_libraries.include"/>
+  <%include file="../../python_deps.include"/>
+  <%include file="../../cxx_deps.include"/>
+  <%include file="../../run_tests_addons.include"/>
+  
+  # Define the default command.
+  CMD ["bash"]

tools/dockerfile/test/cxx_buster_x64/Dockerfile

@@ -0,0 +1,80 @@
+# Copyright 2015 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM debian:buster
+
+# Install Git and basic packages.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  dnsutils \
+  gcc \
+  gcc-multilib \
+  git \
+  golang \
+  gyp \
+  lcov \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  perl \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+#================
+# Build profiling
+RUN apt-get update && apt-get install -y time && apt-get clean
+
+# Google Cloud platform API libraries
+RUN apt-get update && apt-get install -y python-pip && apt-get clean
+RUN pip install --upgrade google-api-python-client oauth2client
+
+#====================
+# Python dependencies
+
+# Install dependencies
+
+RUN apt-get update && apt-get install -y \
+    python-all-dev \
+    python3-all-dev \
+    python-pip
+
+# Install Python packages from PyPI
+RUN pip install --upgrade pip==10.0.1
+RUN pip install virtualenv
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 twisted==17.5.0
+
+#=================
+# C++ dependencies
+RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang && apt-get clean
+
+
+RUN mkdir /var/local/jenkins
+
+
+# Define the default command.
+CMD ["bash"]

tools/run_tests/run_tests.py

@@ -518,6 +518,8 @@ class CLanguage(object):
             return ('ubuntu1604', [])
         elif compiler == 'gcc7.4':
             return ('ubuntu1804', [])
+        elif compiler == 'gcc8.3':
+            return ('buster', [])
         elif compiler == 'gcc_musl':
             return ('alpine', [])
         elif compiler == 'clang3.4':
@@ -1475,11 +1477,11 @@ argp.add_argument(
     '--compiler',
     choices=[
         'default', 'gcc4.4', 'gcc4.6', 'gcc4.8', 'gcc4.9', 'gcc5.3', 'gcc7.4',
-        'gcc_musl', 'clang3.4', 'clang3.5', 'clang3.6', 'clang3.7', 'clang7.0',
-        'python2.7', 'python3.4', 'python3.5', 'python3.6', 'python3.7',
-        'python3.8', 'pypy', 'pypy3', 'python_alpine', 'all_the_cpythons',
-        'electron1.3', 'electron1.6', 'coreclr', 'cmake', 'cmake_vs2015',
-        'cmake_vs2017'
+        'gcc8.3', 'gcc_musl', 'clang3.4', 'clang3.5', 'clang3.6', 'clang3.7',
+        'clang7.0', 'python2.7', 'python3.4', 'python3.5', 'python3.6',
+        'python3.7', 'python3.8', 'pypy', 'pypy3', 'python_alpine',
+        'all_the_cpythons', 'electron1.3', 'electron1.6', 'coreclr', 'cmake',
+        'cmake_vs2015', 'cmake_vs2017'
     ],
     default='default',
     help=

tools/run_tests/run_tests_matrix.py

@@ -316,8 +316,8 @@ def _create_portability_test_jobs(extra_args=[],
 
     # portability C and C++ on x64
     for compiler in [
-            'gcc4.8', 'gcc5.3', 'gcc7.4', 'gcc_musl', 'clang3.5', 'clang3.6',
-            'clang3.7', 'clang7.0'
+            'gcc4.8', 'gcc5.3', 'gcc7.4', 'gcc8.3', 'gcc_musl', 'clang3.5',
+            'clang3.6', 'clang3.7', 'clang7.0'
     ]:
         test_jobs += _generate_jobs(
             languages=['c', 'c++'],