fix: refactor locks to apply them uniquely per node (#11052)

This refactor is done for few reasons below

- to avoid deadlocks in scenarios when number
  of nodes are smaller < actual erasure stripe
  count where in N participating local lockers
  can lead to deadlocks across systems.

- avoids expiry routines to run 1000 of separate
  network operations and routes per disk where
  as each of them are still accessing one single
  local entity.

- it is ideal to have since globalLockServer
  per instance.

- In a 32node deployment however, each server
  group is still concentrated towards the
  same set of lockers that partipicate during
  the write/read phase, unlike previous minio/dsync
  implementation - this potentially avoids send
  32 requests instead we will still send at max
  requests of unique nodes participating in a
  write/read phase.

- reduces overall chattiness on smaller setups.

pkg/madmin/encrypt.go

@@ -28,7 +28,11 @@ import (
 	"github.com/secure-io/sio-go/sioutil"
 )
 
-var idKey = argon2.NewIDKey(1, 64*1024, 4)
+var idKey func([]byte, []byte, []byte, []byte, uint32) []byte
+
+func init() {
+	idKey = argon2.NewIDKey(1, 64*1024, 4)
+}
 
 // EncryptData encrypts the data with an unique key
 // derived from password using the Argon2id PBKDF.