[#1072] node, ir: Add new config option kludge_compatibility_mode

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

cmd/frostfs-node/config.go

@@ -109,6 +109,9 @@ type applicationConfiguration struct {
 		lowMem         bool
 		rebuildWorkers uint32
 	}
+
+	// if need to run node in compatibility with other versions mode
+	cmode *atomic.Bool
 }
 
 type shardCfg struct {
@@ -204,10 +207,13 @@ func (a *applicationConfiguration) readConfig(c *config.Config) error {
 		}
 
 		// clear if it is rereading
+		cmode := a.cmode
 		*a = applicationConfiguration{}
+		a.cmode = cmode
 	}
 
 	a._read = true
+	a.cmode.Store(nodeconfig.CompatibilityMode(c))
 
 	// Logger
 
@@ -648,7 +654,11 @@ type cfgControlService struct {
 var persistateSideChainLastBlockKey = []byte("side_chain_last_processed_block")
 
 func initCfg(appCfg *config.Config) *cfg {
-	c := &cfg{}
+	c := &cfg{
+		applicationConfiguration: applicationConfiguration{
+			cmode: &atomic.Bool{},
+		},
+	}
 
 	err := c.readConfig(appCfg)
 	if err != nil {