Merge pull request #3757 from murgatroid99/node_interop_docker_fix_real

Fix the Node interop test runner files

tools/jenkins/grpc_interop_node/Dockerfile

@@ -48,6 +48,7 @@ RUN apt-get update && apt-get install -y \
   libc6-dbg \
   libc6-dev \
   libgtest-dev \
+  libssl-dev \
   libtool \
   make \
   strace \

tools/jenkins/grpc_interop_node/build_interop.sh

@@ -45,5 +45,4 @@ make install-certs
 
 # build Node interop client & server
 npm install -g node-gyp
-make install_c -C /var/local/git/grpc
+(npm install && node-gyp rebuild)
-(cd src/node && npm install && node-gyp rebuild)