Add Node distrib tests and fixed some issues with the packaging script

test/distrib/node/distrib_test.js

test/distrib/node/package.json

test/distrib/node/run_distrib_test.sh

tools/dockerfile/distribtest/node_centos7_x64/Dockerfile

tools/dockerfile/distribtest/node_jessie_x64/Dockerfile

tools/dockerfile/distribtest/node_jessie_x86/Dockerfile

tools/dockerfile/distribtest/node_ubuntu1204_x64/Dockerfile

tools/dockerfile/distribtest/node_ubuntu1404_x64/Dockerfile

tools/dockerfile/distribtest/node_ubuntu1504_x64/Dockerfile

tools/dockerfile/distribtest/node_ubuntu1510_x64/Dockerfile

tools/dockerfile/distribtest/node_ubuntu1604_x64/Dockerfile

tools/dockerfile/distribtest/node_wheezy_x64/Dockerfile

tools/run_tests/build_package_node.sh

tools/run_tests/distribtest_targets.py