[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_openbsd.go b/vendor/golang.org/x/sys/unix/syscall_openbsd.go
index 22b5503..7c666e5 100644
--- a/vendor/golang.org/x/sys/unix/syscall_openbsd.go
+++ b/vendor/golang.org/x/sys/unix/syscall_openbsd.go
@@ -80,7 +80,7 @@
 	return Pipe2(p, 0)
 }
 
-//sysnb	pipe2(p *[2]_C_int, flags int) (err error)
+// sysnb	pipe2(p *[2]_C_int, flags int) (err error)
 func Pipe2(p []int, flags int) error {
 	if len(p) != 2 {
 		return EINVAL
@@ -92,7 +92,7 @@
 	return err
 }
 
-//sys	Getdents(fd int, buf []byte) (n int, err error)
+// sys	Getdents(fd int, buf []byte) (n int, err error)
 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
 	n, err = Getdents(fd, buf)
 	if err != nil || basep == nil {