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/google.golang.org/protobuf/runtime/protoimpl/impl.go

@@ -0,0 +1,44 @@
+// Copyright 2018 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.
+
+// Package protoimpl contains the default implementation for messages
+// generated by protoc-gen-go.
+//
+// WARNING: This package should only ever be imported by generated messages.
+// The compatibility agreement covers nothing except for functionality needed
+// to keep existing generated messages operational. Breakages that occur due
+// to unauthorized usages of this package are not the author's responsibility.
+package protoimpl
+
+import (
+	"google.golang.org/protobuf/internal/filedesc"
+	"google.golang.org/protobuf/internal/filetype"
+	"google.golang.org/protobuf/internal/impl"
+)
+
+// UnsafeEnabled specifies whether package unsafe can be used.
+const UnsafeEnabled = impl.UnsafeEnabled
+
+type (
+	// Types used by generated code in init functions.
+	DescBuilder = filedesc.Builder
+	TypeBuilder = filetype.Builder
+
+	// Types used by generated code to implement EnumType, MessageType, and ExtensionType.
+	EnumInfo      = impl.EnumInfo
+	MessageInfo   = impl.MessageInfo
+	ExtensionInfo = impl.ExtensionInfo
+
+	// Types embedded in generated messages.
+	MessageState     = impl.MessageState
+	SizeCache        = impl.SizeCache
+	WeakFields       = impl.WeakFields
+	UnknownFields    = impl.UnknownFields
+	ExtensionFields  = impl.ExtensionFields
+	ExtensionFieldV1 = impl.ExtensionField
+
+	Pointer = impl.Pointer
+)
+
+var X impl.Export

vendor/google.golang.org/protobuf/runtime/protoimpl/version.go

@@ -0,0 +1,56 @@
+// Copyright 2019 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.
+
+package protoimpl
+
+import (
+	"google.golang.org/protobuf/internal/version"
+)
+
+const (
+	// MaxVersion is the maximum supported version for generated .pb.go files.
+	// It is always the current version of the module.
+	MaxVersion = version.Minor
+
+	// GenVersion is the runtime version required by generated .pb.go files.
+	// This is incremented when generated code relies on new functionality
+	// in the runtime.
+	GenVersion = 20
+
+	// MinVersion is the minimum supported version for generated .pb.go files.
+	// This is incremented when the runtime drops support for old code.
+	MinVersion = 0
+)
+
+// EnforceVersion is used by code generated by protoc-gen-go
+// to statically enforce minimum and maximum versions of this package.
+// A compilation failure implies either that:
+//	* the runtime package is too old and needs to be updated OR
+//	* the generated code is too old and needs to be regenerated.
+//
+// The runtime package can be upgraded by running:
+//	go get google.golang.org/protobuf
+//
+// The generated code can be regenerated by running:
+//	protoc --go_out=${PROTOC_GEN_GO_ARGS} ${PROTO_FILES}
+//
+// Example usage by generated code:
+//	const (
+//		// Verify that this generated code is sufficiently up-to-date.
+//		_ = protoimpl.EnforceVersion(genVersion - protoimpl.MinVersion)
+//		// Verify that runtime/protoimpl is sufficiently up-to-date.
+//		_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - genVersion)
+//	)
+//
+// The genVersion is the current minor version used to generated the code.
+// This compile-time check relies on negative integer overflow of a uint
+// being a compilation failure (guaranteed by the Go specification).
+type EnforceVersion uint
+
+// This enforces the following invariant:
+//	MinVersion ≤ GenVersion ≤ MaxVersion
+const (
+	_ = EnforceVersion(GenVersion - MinVersion)
+	_ = EnforceVersion(MaxVersion - GenVersion)
+)