[VOL-5222] - Upgrade golang version for VOLTHA jobs

.gitreview
VERSION
----------
  o post-release tasks.  Repository tagged and banched.
  o Add missing newlines at EOF.
  o go.mod syntax does not allow *-dev suffix so update
    master VERSION from v5.5.0-dev to v5.5.0.  Community
    can introduce a dev version when needed.

go/*.pb.og
vendor/*.go
-----------
  o invoke make mod-update to regenerate go.sum and friends.
  o lint clenaups: find . -name '*.go' -print | xargs -n1 gofmt -s -e -w

Change-Id: I3da80c0ce5600679b388e309bfa4702f1ec3212b
diff --git a/vendor/golang.org/x/sys/unix/syscall_aix.go b/vendor/golang.org/x/sys/unix/syscall_aix.go
index d8efb71..9134130 100644
--- a/vendor/golang.org/x/sys/unix/syscall_aix.go
+++ b/vendor/golang.org/x/sys/unix/syscall_aix.go
@@ -36,7 +36,7 @@
 	return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode)
 }
 
-//sys	utimes(path string, times *[2]Timeval) (err error)
+// sys	utimes(path string, times *[2]Timeval) (err error)
 func Utimes(path string, tv []Timeval) error {
 	if len(tv) != 2 {
 		return EINVAL
@@ -44,7 +44,7 @@
 	return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
 }
 
-//sys	utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
+// sys	utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
 func UtimesNano(path string, ts []Timespec) error {
 	if len(ts) != 2 {
 		return EINVAL
@@ -313,12 +313,12 @@
 	return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
 }
 
-//sys	getdirent(fd int, buf []byte) (n int, err error)
+// sys	getdirent(fd int, buf []byte) (n int, err error)
 func Getdents(fd int, buf []byte) (n int, err error) {
 	return getdirent(fd, buf)
 }
 
-//sys	wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
+// sys	wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
 	var status _C_int
 	var r Pid_t
@@ -543,7 +543,7 @@
 
 //sys	Getsystemcfg(label int) (n uint64)
 
-//sys	umount(target string) (err error)
+// sys	umount(target string) (err error)
 func Unmount(target string, flags int) (err error) {
 	if flags != 0 {
 		// AIX doesn't have any flags for umount.