Fix the distributed version of the unified installer

[verdx]

|Unified unattended installer|

As seen on trying to make a distributed installation using https://github.com/wazuh/wazuh-packages/tree/unify-unattended, there are some bugs that need fixing.

• Missing l in configureElasticsearch, getConfig elasticsearch/roles/roles.ym
• In elasticsearch.sh, line copyCertificatesElasticsearch einame pos
  the arguments are passed without ${} and aren't needed, the variables are accessed directly.
• Also in elasticsearch.sh, line if [ ! ${IMN[@]} == ${einame} ]; then, the conditional doesn't work. It needs double brackets, [[ ]].
• In kibana.sh, the installation gets stuck on until [[ "$(curl -XGET https://${kip}/status -I -uadmin:admin -k -s --max-time 300 | grep "200 OK")" ]]; do.
• After the elasticsearch installation, we can see this error in /var/elasticsearch/wazuh.log: /etc/elasticsearch/certs/elasticsearch.pem has insecure file permissions (should be 0600)
• After the filebeat installation, filebeat test output gives this error: no such file or directory /etc/filebeat/certs/filebeat.pem
• The initialization of Open Distro Security also fails:

[root@centos7 unattended_scripts]# ls -l /etc/elasticsearch/certs/
total 20
-rw-r--r--. 1 root elasticsearch 1708 Dec 10 19:49 admin-key.pem
-rw-r--r--. 1 root elasticsearch 1103 Dec 10 19:49 admin.pem
-r--r--r--. 1 root elasticsearch 1704 Dec 10 19:49 elasticsearch-key.pem
-rw-r--r--. 1 root elasticsearch 1216 Dec 10 19:49 elasticsearch.pem
-rw-r--r--. 1 root elasticsearch 1180 Dec 10 19:49 root-ca.pem

[root@centos7 unattended_scripts]# /usr/share/elasticsearch/plugins/opendistro_security/tools/securityadmin.sh -cd ../securityconfig/ -nhnv -cacert /etc/elasticsearch/certs/root-ca.pem -cert /etc/elasticsearch/certs/admin.pem -key /etc/elasticsearch/certs/admin-key.pem -h 192.168.57.101
Open Distro Security Admin v7
Will connect to 192.168.57.101:9300 ... done
ERR: Cannot connect to Elasticsearch. Please refer to elasticsearch logfile for more information
Trace:
NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{bJdZCU8YQ-q0PoLakpSN-Q}{192.168.57.101}{192.168.57.101:9300}]]
	at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:352)
	at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:248)
	at org.elasticsearch.client.transport.TransportProxyClient.execute(TransportProxyClient.java:57)
	at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:391)
	at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:412)
	at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:401)
	at com.amazon.opendistroforelasticsearch.security.tools.OpenDistroSecurityAdmin.execute(OpenDistroSecurityAdmin.java:524)
	at com.amazon.opendistroforelasticsearch.security.tools.OpenDistroSecurityAdmin.main(OpenDistroSecurityAdmin.java:157)

• Errors when trying to start elasticsearch:

[root@centos7 unattended_scripts]# journalctl -r -u elasticsearch.service | grep -i -E "error|fatal|critical"
Dec 10 19:34:54 centos7 systemd-entrypoint[9360]: For complete error details, refer to the log at /var/log/elasticsearch/wazuh.log
Dec 10 19:33:32 centos7 systemd-entrypoint[8417]: For complete error details, refer to the log at /var/log/elasticsearch/wazuh.log
Dec 10 19:31:19 centos7 systemd-entrypoint[7470]: For complete error details, refer to the log at /var/log/elasticsearch/wazuh.log
Dec 10 19:29:55 centos7 systemd-entrypoint[6671]: For complete error details, refer to the log at /var/log/elasticsearch/wazuh.log
Dec 10 19:26:20 centos7 systemd-entrypoint[5729]: For complete error details, refer to the log at /var/log/elasticsearch/wazuh.log
Dec 10 19:25:08 centos7 systemd-entrypoint[4780]: For complete error details, refer to the log at /var/log/elasticsearch/wazuh.log
Dec 10 19:22:54 centos7 systemd-entrypoint[3810]: For complete error details, refer to the log at /var/log/elasticsearch/wazuh.log
Dec 10 19:22:54 centos7 systemd-entrypoint[3810]: at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127)