Tests: fix Node.js functional tests on RedHat systems
Tests: fix Node.js functional tests on RedHat systems

Node.js binaries are installed in /usr/local/bin but it's
not included in root's PATH by default.

ronnix/fabtools,pombredanne/fabtools,wagigi/fabtools-python,fabtools/fabtools,AMOSoft/fabtools,ahnjungho/fabtools,prologic/fabtools,n0n0x/fabtools-python,davidcaste/fabtools,bitmonk/fabtools