update last_updated of peer info to local now (#211)

time between peers may not be synced, using peer last_updated time may cause peer info being cleared incorrectly

Cargo.lock

@@ -1426,6 +1426,7 @@ dependencies = [
  "url",
  "uuid",
  "windows-sys 0.52.0",
+ "winreg 0.11.0",
  "zerocopy",
  "zip",
 ]
@@ -7175,6 +7176,16 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "winreg"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76a1a57ff50e9b408431e8f97d5456f2807f8eb2a2cd79b06068fc87f8ecf189"
+dependencies = [
+ "cfg-if",
+ "winapi",
+]
+
 [[package]]
 name = "winreg"
 version = "0.50.0"