Fail faster in NPM tests

The test script now stops if the configuration or build steps fail.

test/run_npm_test.sh

@@ -38,7 +38,7 @@ docker-compose up -d || exit 1
 
 # Install dependencies
 cd $testdir
-npm install
+npm install || exit 1
 
 # Configure and install MaxScale
 cd $maxscaledir
@@ -52,9 +52,9 @@ cmake $srcdir -DCMAKE_BUILD_TYPE=Debug \
       -DBUILD_CDC=Y \
       -DTARGET_COMPONENT=all \
       -DDEFAULT_MODULE_CONFIGDIR=$maxscaledir \
-      -DDEFAULT_ADMIN_USER=`whoami`
+      -DDEFAULT_ADMIN_USER=`whoami` || exit 1
 
-make install
+make install || exit 1
 
 # Create required directories (we could run the postinst script but it's a bit too invasive)
 mkdir -p $maxscaledir/lib64/maxscale