fix nightly build and build script error

Author: yi.wu

paddle/scripts/paddle_build.sh

@@ -105,7 +105,7 @@ function cmake_gen() {
         -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
         -DWITH_FLUID_ONLY=${WITH_FLUID_ONLY:-OFF}
         -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
-        -DWITH_CONTRIB=ON
+        -DWITH_CONTRIB=${WITH_CONTRIB:-ON}
     ========================================
 EOF
     # Disable UNITTEST_USE_VIRTUALENV in docker because
@@ -132,7 +132,7 @@ EOF
         -DCMAKE_MODULE_PATH=/opt/rocm/hip/cmake \
         -DWITH_FLUID_ONLY=${WITH_FLUID_ONLY:-OFF} \
         -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
-        -DWITH_CONTRIB=ON
+        -DWITH_CONTRIB=${WITH_CONTRIB:-ON}
 }
 
 function abort(){