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showcerts[/<url>][/proxy-addr:proxy-port] - display TLS connection certificates of server side
e.g. showcerts/zedcloud.local.zededa.net -- display TLS certificates from the controller
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showcerts/zedcloud.local.zededa.net/10.10.1.128:3128 -- display controller TLS certificates through a proxy server
The 'showcerts' command displays remote server or peer TLS certificates. It can optionally take the server side URL and also the proxy setting for proxy IP address and port. If no option is given, the showcerts finds the controller URL in '/config/server' file for the URL part. If the management port has proxy configuration, the 'showcerts' uses the proxy IP and port when querying the controller site.
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