config: delay load config file (#5258)

Restructuring of config code in v1.55 resulted in config
file being loaded early at process startup. If configuration
file is encrypted this means user will need to supply the password,
even when running commands that does not use config.
This also lead to an issue where mount with --deamon failed to
decrypt the config file when it had to prompt user for passord.

Fixes #5236
Fixes #5228

cmd/cmd.go

@@ -400,7 +400,7 @@ func initConfig() {
 	configflags.SetFlags(ci)
 
 	// Load the config
-	configfile.LoadConfig(ctx)
+	configfile.Install()
 
 	// Start accounting
 	accounting.Start(ctx)

cmd/mountlib/rc_test.go

@@ -21,7 +21,7 @@ import (
 
 func TestRc(t *testing.T) {
 	ctx := context.Background()
-	configfile.LoadConfig(ctx)
+	configfile.Install()
 	mount := rc.Calls.Get("mount/mount")
 	assert.NotNil(t, mount)
 	unmount := rc.Calls.Get("mount/unmount")

cmd/serve/dlna/dlna_test.go

@@ -41,7 +41,7 @@ func startServer(t *testing.T, f fs.Fs) {
 }
 
 func TestInit(t *testing.T) {
-	configfile.LoadConfig(context.Background())
+	configfile.Install()
 
 	f, err := fs.NewFs(context.Background(), "testdata/files")
 	l, _ := f.List(context.Background(), "")

cmd/serve/http/http_test.go

@@ -61,7 +61,7 @@ var (
 func TestInit(t *testing.T) {
 	ctx := context.Background()
 	// Configure the remote
-	configfile.LoadConfig(context.Background())
+	configfile.Install()
 	// fs.Config.LogLevel = fs.LogLevelDebug
 	// fs.Config.DumpHeaders = true
 	// fs.Config.DumpBodies = true

cmd/serve/restic/restic_appendonly_test.go

@@ -1,7 +1,6 @@
 package restic
 
 import (
-	"context"
 	"crypto/rand"
 	"encoding/hex"
 	"io"
@@ -65,8 +64,7 @@ func createOverwriteDeleteSeq(t testing.TB, path string) []TestRequest {
 
 // TestResticHandler runs tests on the restic handler code, especially in append-only mode.
 func TestResticHandler(t *testing.T) {
-	ctx := context.Background()
-	configfile.LoadConfig(ctx)
+	configfile.Install()
 	buf := make([]byte, 32)
 	_, err := io.ReadFull(rand.Reader, buf)
 	require.NoError(t, err)