fix incorrect folder name for julia-0.6.x

Former-commit-id: ef2c7401e0876f22d2f7762d182cfbcd5a7d9c70

julia-0.6.3/share/doc/julia/examples/clustermanager/simple/test_simple.jl

@@ -0,0 +1,12 @@
+# This file is a part of Julia. License is MIT: https://julialang.org/license
+
+cmanpath = joinpath(dirname(@__FILE__), "UnixDomainCM.jl")
+include(cmanpath)
+
+npids = addprocs(UnixDomainCM(2))
+assert(length(npids) == 2)
+test_pids = [remotecall_fetch(myid, x) for x in npids]
+assert(npids == test_pids)
+rmprocs(npids; waitfor=1.0)
+
+exit(0)