fix ci issues. set cxx standard to 14 by default for third party installs.

Author: dbarker

.github/workflows/cmake_install.yml

@@ -73,10 +73,11 @@ jobs:
     - name: Setup CI Environment
       run: |
         sudo -E ./ci/setup_ci_environment.sh
+        sudo -E ./ci/setup_googletest.sh
     - name: Install Dependencies
       run: |
         sudo -E apt-get update
-        sudo -E apt-get install -y libgmock-dev libgtest-dev libbenchmark-dev libabsl-dev libcurl4-openssl-dev zlib1g-dev nlohmann-json3-dev libprotobuf-dev libgrpc++-dev protobuf-compiler protobuf-compiler-grpc
+        sudo -E apt-get install -y libbenchmark-dev libabsl-dev libcurl4-openssl-dev zlib1g-dev nlohmann-json3-dev libprotobuf-dev libgrpc++-dev protobuf-compiler protobuf-compiler-grpc
     - name: Run Tests (static libs)
       env:
         BUILD_SHARED_LIBS: 'OFF'

install/cmake/CMakeLists.txt

@@ -67,8 +67,8 @@ else()
   set(USE_SUBMODULES OFF)
 endif()
 
-if(NOT DEFINED CMAKE_CXX_STANDARD)
-  set(CMAKE_CXX_STANDARD 17)
+if(NOT CMAKE_CXX_STANDARD)
+  set(CMAKE_CXX_STANDARD 14)
 endif()
 
 set(CMAKE_OPTIONS