VOL-1460 Updated core to use voltha-protos instead of local protos
Moved protos to python directory in order to maintain functionaly of containers built there.
Added capability to do local builds of protos
Added instructions on running dep ensure for getting protos.
Updated github.com/golang/protobuf version to v1.3.1

Change-Id: Ia6ef55f07f0d5dcb5b750d7c37b21b71db85bfc4
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_aix_ppc64_gccgo.go b/vendor/golang.org/x/sys/unix/zsyscall_aix_ppc64_gccgo.go
index e88a442..5491c89 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_aix_ppc64_gccgo.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_aix_ppc64_gccgo.go
@@ -118,6 +118,7 @@
 int gettimeofday(uintptr_t, uintptr_t);
 int time(uintptr_t);
 int utime(uintptr_t, uintptr_t);
+unsigned long long getsystemcfg(int);
 int getrlimit(int, uintptr_t);
 int setrlimit(int, uintptr_t);
 long long lseek(int, long long, int);
@@ -1011,6 +1012,14 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func callgetsystemcfg(label int) (r1 uintptr, e1 Errno) {
+	r1 = uintptr(C.getsystemcfg(C.int(label)))
+	e1 = syscall.GetErrno()
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func callgetrlimit(resource int, rlim uintptr) (r1 uintptr, e1 Errno) {
 	r1 = uintptr(C.getrlimit(C.int(resource), C.uintptr_t(rlim)))
 	e1 = syscall.GetErrno()