[#1442] cli/tree: Allow to specify rpc-endpoint with config file

We have several ways to specify the `rpc-endpoint`: with a flag,
with a single config file or multiple files. Before, the `rpc-endpoint`
flag was marked as required. Because `cobra` checked the required flag
presence first, it prevented specifying `rpc-endpoint` with a config file.

Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>

cmd/frostfs-cli/modules/tree/add.go

@@ -30,8 +30,6 @@ func initAddCmd() {
 	ff := addCmd.Flags()
 	ff.StringSlice(metaFlagKey, nil, "Meta pairs in the form of Key1=[0x]Value1,Key2=[0x]Value2")
 	ff.Uint64(parentIDFlagKey, 0, "Parent node ID")
-
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 }
 
 func add(cmd *cobra.Command, _ []string) {

cmd/frostfs-cli/modules/tree/add_by_path.go

@@ -36,7 +36,6 @@ func initAddByPathCmd() {
 	ff.String(pathFlagKey, "", "Path to a node")
 	ff.StringSlice(metaFlagKey, nil, "Meta pairs in the form of Key1=[0x]Value1,Key2=[0x]Value2")
 
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 	_ = cobra.MarkFlagRequired(ff, pathFlagKey)
 }
 

cmd/frostfs-cli/modules/tree/get_by_path.go

@@ -36,8 +36,6 @@ func initGetByPathCmd() {
 	ff.String(pathFlagKey, "", "Path to a node")
 
 	ff.Bool(latestOnlyFlagKey, false, "Look only for the latest version of a node")
-
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 }
 
 func getByPath(cmd *cobra.Command, _ []string) {

cmd/frostfs-cli/modules/tree/get_op_log.go

@@ -30,8 +30,6 @@ func initGetOpLogCmd() {
 	ff := getOpLogCmd.Flags()
 	ff.Uint64(heightFlagKey, 0, "Height to start with")
 	ff.Uint64(countFlagKey, 10, "Logged operations count")
-
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 }
 
 func getOpLog(cmd *cobra.Command, _ []string) {

cmd/frostfs-cli/modules/tree/healthcheck.go

@@ -20,8 +20,6 @@ var healthcheckCmd = &cobra.Command{
 
 func initHealthcheckCmd() {
 	commonflags.Init(healthcheckCmd)
-	ff := healthcheckCmd.Flags()
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 }
 
 func healthcheck(cmd *cobra.Command, _ []string) {

cmd/frostfs-cli/modules/tree/list.go

@@ -26,8 +26,6 @@ func initListCmd() {
 	ff := listCmd.Flags()
 	ff.String(commonflags.CIDFlag, "", commonflags.CIDFlagUsage)
 	_ = listCmd.MarkFlagRequired(commonflags.CIDFlag)
-
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 }
 
 func list(cmd *cobra.Command, _ []string) {

cmd/frostfs-cli/modules/tree/move.go

@@ -33,8 +33,6 @@ func initMoveCmd() {
 
 	_ = getSubtreeCmd.MarkFlagRequired(nodeIDFlagKey)
 	_ = getSubtreeCmd.MarkFlagRequired(parentIDFlagKey)
-
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 }
 
 func move(cmd *cobra.Command, _ []string) {

cmd/frostfs-cli/modules/tree/remove.go

@@ -29,8 +29,6 @@ func initRemoveCmd() {
 	ff.Uint64(nodeIDFlagKey, 0, "Node ID.")
 
 	_ = getSubtreeCmd.MarkFlagRequired(nodeIDFlagKey)
-
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 }
 
 func remove(cmd *cobra.Command, _ []string) {

cmd/frostfs-cli/modules/tree/subtree.go

@@ -34,8 +34,6 @@ func initGetSubtreeCmd() {
 
 	_ = getSubtreeCmd.MarkFlagRequired(commonflags.CIDFlag)
 	_ = getSubtreeCmd.MarkFlagRequired(treeIDFlagKey)
-
-	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
 }
 
 func getSubTree(cmd *cobra.Command, _ []string) {