Fix failed Kibana authentication via self-signed certificates

Symptoms: Elasticsearch installation failed as shown below (10.1.1 HA).

error: {"error":{"root_cause":[{"type":"master_not_discovered_exception","reason":null}],"type":"master_not_discovered_exception","reason":null},"status":503}

Kibana tries to connect to ELK to acquire the xPACK license and receives a response about invalid certificates.

To solve the issue, reinstall the existing ELK stack:

Stop the processes on all servers and remove the ELK applications:

On the Master server, run the following commands:

$ sudo su - WFUSER
$ wfmanager stop logstash
$ wfmanager stop elasticsearch

$ cd INSTALL_DIR
$ rm -rf elasticsearch
$ rm -rf logstash

On the Master server, run the following commands:

$ sudo su - WFUSER
$ wfmanager stop kibana

$ cd INSTALL_DIR
$ rm -rf kibana

Generate new certificates:
1. On the Master server, go to the PACKAGE_DIR and remove the existing certificates:
```
$ cd INSTALL_DIR/wf_installer

$ rm -rf certificates/_auth_internal/elk-ca.*
$ rm -rf certificates/_auth_internal/kibana.*
$ rm -rf certificates/_auth_internal/logstash.*
```
2. Create new certificates:
```
./install.sh certs generate
```
  The following certificates are created in the directory on the Master server:
  - elk-ca.crt
  - elk-ca.key
  - kibana.crt
  - kibana.key
  - logstash.crt
  - logstash.key
  - logstash.p12
Copy the new certificates to the /certificates directory on the Master server.
Run the script to reinstall Master servers according to the selected mode (HA or common) and installation method as described in the Installation | Overview topic. See the example below:
```
$ ./install.sh preinstall master
$ ./install.sh install master
$ ./install.sh check master
```