Add support of creating a client with the name of a deleted client

[hcye]

Make sure your check these beforehand!

• Issues - https://github.com/angristan/openvpn-install/issues
• README and FAQ - https://github.com/angristan/openvpn-install
• Wiki - https://github.com/angristan/openvpn-install/wiki
• Discussions - https://github.com/angristan/openvpn-install/discussions

Server OS

ubuntu 20.04

OpenVPN version

No response

Client

No response

What is the bug?

add The following three lines after openvpn-install.sh line 1185 to fix this bug

     line=`grep -n R /etc/openvpn/easy-rsa/pki/index.txt`
     line_num=`echo ${line}  | cut -d ':' -f 1`
     sed -i  "${line_num}d" /etc/openvpn/easy-rsa/pki/index.txt

Relevant log output

no output

[angristan]

PR: #1080