cleanup the way openssl and zlib are used

test/distrib/cpp/run_distrib_test_cmake.bat

@@ -54,7 +54,7 @@ cd ../../../..
 cd cmake
 mkdir build
 cd build
-cmake -DCMAKE_INSTALL_PREFIX=%INSTALL_DIR% -DOPENSSL_ROOT_DIR=%OPENSSL_DIR% -DOPENSSL_INCLUDE_DIR=%OPENSSL_DIR%/include -DZLIB_LIBRARY=%INSTALL_DIR%/lib/zlibstatic.lib -DZLIB_INCLUDE_DIR=%INSTALL_DIR%/include -DgRPC_INSTALL=ON -DgRPC_BUILD_TESTS=OFF -DgRPC_PROTOBUF_PROVIDER=package -DgRPC_ZLIB_PROVIDER=package -DgRPC_CARES_PROVIDER=package -DgRPC_SSL_PROVIDER=package -DCMAKE_BUILD_TYPE=Release ../.. || goto :error
+cmake -DCMAKE_INSTALL_PREFIX=%INSTALL_DIR% -DOPENSSL_ROOT_DIR=%OPENSSL_DIR% -DZLIB_ROOT=%INSTALL_DIR% -DgRPC_INSTALL=ON -DgRPC_BUILD_TESTS=OFF -DgRPC_PROTOBUF_PROVIDER=package -DgRPC_ZLIB_PROVIDER=package -DgRPC_CARES_PROVIDER=package -DgRPC_SSL_PROVIDER=package -DCMAKE_BUILD_TYPE=Release ../.. || goto :error
 cmake --build . --config Release --target install || goto :error
 cd ../..
 
@@ -64,7 +64,7 @@ mkdir cmake
 cd cmake
 mkdir build
 cd build
-cmake -DCMAKE_INSTALL_PREFIX=%INSTALL_DIR% -DOPENSSL_ROOT_DIR=%OPENSSL_DIR% -DOPENSSL_INCLUDE_DIR=%OPENSSL_DIR%/include -DZLIB_LIBRARY=%INSTALL_DIR%/lib/zlibstatic.lib -DZLIB_INCLUDE_DIR=%INSTALL_DIR%/include ../.. || goto :error
+cmake -DCMAKE_INSTALL_PREFIX=%INSTALL_DIR% -DOPENSSL_ROOT_DIR=%OPENSSL_DIR% -DZLIB_ROOT=%INSTALL_DIR% ../.. || goto :error
 cmake --build . --config Release || goto :error
 cd ../../../../..