Telegraf no longer depends on lsof

so remove it as a dependency from the linux packages.

closes #974

scripts/build.py

@@ -560,7 +560,6 @@ def build_packages(build_output, version, nightly=False, rc=None, iteration=1):
                             fpm_command += "--verbose "
                         if package_type == "rpm":
                             fpm_command += "--depends coreutils "
-                            fpm_command += "--depends lsof "
                         out = run(fpm_command, shell=True)
                         matches = re.search(':path=>"(.*)"', out)
                         outfile = None