fixes #3359

Ubiquiti removed keytool (and java) from recent releases of Unifi OS. This moves from keytool to openssl's native pkcs12.

Tested on Unifi Dream Machine which runs Unifi OS and a built-in Unifi controller.

Also added backup of existing files prior to change in case anything goes wrong, and update system configuration with compatible ciphers.

dnsapi/dns_mydnsjp.sh

@@ -1,14 +1,14 @@
 #!/usr/bin/env sh
+# shellcheck disable=SC2034
+dns_mydnsjp_info='MyDNS.JP
+Site: MyDNS.JP
+Docs: github.com/acmesh-official/acme.sh/wiki/dnsapi#dns_mydnsjp
+Options:
+ MYDNSJP_MasterID Master ID
+ MYDNSJP_Password Password
+Author: epgdatacapbon
+'
 
-#Here is a api script for MyDNS.JP.
-#This file name is "dns_mydnsjp.sh"
-#So, here must be a method   dns_mydnsjp_add()
-#Which will be called by acme.sh to add the txt record to your api system.
-#returns 0 means success, otherwise error.
-#
-#Author: epgdatacapbon
-#Report Bugs here: https://github.com/epgdatacapbon/acme.sh
-#
 ########  Public functions #####################
 
 # Export MyDNS.JP MasterID and Password in following variables...