wazuh-certs-tool.sh support for multiple IPs in server nodes

[miguelfdez99]

Related issue
closes #1573

Description

We could only have one IP per node, in order to allow multiple IPs I had to change the cert_parseYaml function. This function treated every server IP as if it were from the same node. Changing this function also meant changing the way the variables were generated. Once this was completed I made the changes necessary to allow the wazuh-certs-tool.sh script to create certificates with multiple IPs in a server node.

Logs example

Certificates generated with this config.yml file.

nodes:
  indexer:
    - name: indexer
      ip: 127.0.0.1
  server:
    - name: server
      ip: 127.0.0.1
      ip: 127.0.0.2
      ip: google.com
      ip: 127.0.0.4
      ip: wazuh.com
      node_type: master
    - name: server2
      ip: 127.0.0.10
      ip: 127.0.0.11
      node_type: worker
    - name: server3
      ip: 192.168.1.1
      node_type: worker
  dashboard:
    - name: dashboard
      ip: 127.0.0.1

root@ubuntu2004:/home/vagrant# ./wazuh-certs-tool.sh -A
05/08/2022 07:24:59 INFO: Admin certificates created.
05/08/2022 07:24:59 INFO: Wazuh indexer certificates created.
05/08/2022 07:24:59 INFO: Wazuh server certificates created.
05/08/2022 07:24:59 INFO: Wazuh dashboard certificates created.

root@ubuntu2004:/home/vagrant/wazuh-certificates# ls
admin-key.pem      indexer-key.pem  server2-key.pem  server-key.pem
admin.pem          indexer.pem      server2.pem      server.pem
dashboard-key.pem  root-ca.key      server3-key.pem
dashboard.pem      root-ca.pem      server3.pem

root@ubuntu2004:/home/vagrant/wazuh-certificates# openssl x509 -in server.pem -noout -text
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            XX-XX-XX
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: OU = Wazuh, O = Wazuh, L = California
        Validity
            Not Before: Aug  5 07:24:59 2022 GMT
            Not After : Aug  2 07:24:59 2032 GMT
        Subject: C = US, L = California, O = Wazuh, OU = Wazuh, CN = server
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                RSA Public-Key: (2048 bit)
        X509v3 extensions:
            X509v3 Authority Key Identifier: 
                keyid:95:XX-XX-XX

            X509v3 Basic Constraints: 
                CA:FALSE
            X509v3 Key Usage: 
                Digital Signature, Non Repudiation, Key Encipherment, Data Encipherment
            X509v3 Subject Alternative Name: 
                IP Address:127.0.0.1, IP Address:127.0.0.2, DNS:google.com, IP Address:127.0.0.4, DNS:wazuh.com

root@ubuntu2004:/home/vagrant/wazuh-certificates# openssl x509 -in server2.pem -noout -text

...
        Subject: C = US, L = California, O = Wazuh, OU = Wazuh, CN = server2
 ...
 X509v3 Subject Alternative Name: 
                IP Address:127.0.0.10, IP Address:127.0.0.11

root@ubuntu2004:/home/vagrant/wazuh-certificates# openssl x509 -in server3.pem -noout -text

...
        Issuer: OU = Wazuh, O = Wazuh, L = California
        Validity
            Not Before: Aug  5 07:24:59 2022 GMT
            Not After : Aug  2 07:24:59 2032 GMT
        Subject: C = US, L = California, O = Wazuh, OU = Wazuh, CN = server
...
X509v3 Subject Alternative Name: 
              IP Address:192.168.1.1