rebase: vendor dependencies for Vault API

Uses github.com/libopenstorage/secrets to communicate with Vault. This
removes the need for maintaining our own limited Vault APIs.

By adding the new dependency, several other packages got updated in the
process. Unused indirect dependencies have been removed from go.mod.

Signed-off-by: Niels de Vos <ndevos@redhat.com>

vendor/golang.org/x/sys/cpu/cpu_aix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix,ppc64
+// +build aix
 
 package cpu
 

vendor/golang.org/x/sys/cpu/cpu_arm64.go

@@ -10,8 +10,14 @@ const cacheLineSize = 64
 
 func init() {
 	switch runtime.GOOS {
-	case "android", "darwin":
+	case "android", "darwin", "netbsd":
 		// Android and iOS don't seem to allow reading these registers.
+		//
+		// NetBSD:
+		// ID_AA64ISAR0_EL1 is a privileged register and cannot be read from EL0.
+		// It can be read via sysctl(3). Example for future implementers:
+		// https://nxr.netbsd.org/xref/src/usr.sbin/cpuctl/arch/aarch64.c
+		//
 		// Fake the minimal features expected by
 		// TestARM64minimalFeatures.
 		ARM64.HasASIMD = true

vendor/golang.org/x/sys/cpu/syscall_aix_gccgo.go

@@ -0,0 +1,27 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Recreate a getsystemcfg syscall handler instead of
+// using the one provided by x/sys/unix to avoid having
+// the dependency between them. (See golang.org/issue/32102)
+// Morever, this file will be used during the building of
+// gccgo's libgo and thus must not used a CGo method.
+
+// +build aix
+// +build gccgo
+
+package cpu
+
+import (
+	"syscall"
+)
+
+//extern getsystemcfg
+func gccgoGetsystemcfg(label uint32) (r uint64)
+
+func callgetsystemcfg(label int) (r1 uintptr, e1 syscall.Errno) {
+	r1 = uintptr(gccgoGetsystemcfg(uint32(label)))
+	e1 = syscall.GetErrno()
+	return
+}