Valid node name validation

[c-bordon]

Related issue
#1481

An additional validation is added to prevent the user from adding 2 arguments together and omitting the node name:

Example:

[root@centos7-1 ~]# ./wazuh-install.sh -wi -v
22/04/2022 15:15:16 INFO: Starting Wazuh installation assistant. Wazuh version: 4.3.0
22/04/2022 15:15:16 INFO: Verbose logging redirected to /var/log/wazuh-install.log
grep: invalid option -- '.'
Usage: grep [OPTION]... PATTERN [FILE]...
Try 'grep --help' for more information.
22/04/2022 15:15:17 ERROR: There is no certificate for the indexer node -v in /root/wazuh-install-files.tar.

After the Fix:

[root@centos7-1 unattended_installer]# ./wazuh-install.sh -wi -v
22/04/2022 18:42:05 ERROR: Error on argument -wi. Check the given <node-name>, the parameter -v cannot start with "-" or is incorrect
[root@centos7-1 unattended_installer]# ./wazuh-install.sh -wd -v
22/04/2022 18:42:08 ERROR: Error on argument -wd. Check the given <node-name>, the parameter -v cannot start with "-" or is incorrect
[root@centos7-1 unattended_installer]# ./wazuh-install.sh -ws -v
22/04/2022 18:42:10 ERROR: Error on argument -ws. Check the given <node-name>, the parameter -v cannot start with "-" or is incorrect
[root@centos7-1 unattended_installer]# ./wazuh-install.sh --wazuh-indexer -v
22/04/2022 18:42:16 ERROR: Error on argument --wazuh-indexer. Check the given <node-name>, the parameter -v cannot start with "-" or is incorrect
[root@centos7-1 unattended_installer]# ./wazuh-install.sh --wazuh-dashboard -v
22/04/2022 18:42:20 ERROR: Error on argument --wazuh-dashboard. Check the given <node-name>, the parameter -v cannot start with "-" or is incorrect
[root@centos7-1 unattended_installer]# ./wazuh-install.sh --wazuh-server -v
22/04/2022 18:42:25 ERROR: Error on argument --wazuh-server. Check the given <node-name>, the parameter -v cannot start with "-" or is incorrect
[root@centos7-1 unattended_installer]# ./wazuh-install.sh --wazuh-server server -v
22/04/2022 18:42:53 INFO: Starting Wazuh installation assistant. Wazuh version: 4.3.0
22/04/2022 18:42:53 INFO: Verbose logging redirected to /var/log/wazuh-install.log
22/04/2022 18:42:58 DEBUG: Adding the Wazuh repository.
[wazuh]
gpgcheck=1
gpgkey=https://packages-dev.wazuh.com/key/GPG-KEY-WAZUH
enabled=1
name=EL-${releasever} - Wazuh
baseurl=https://packages-dev.wazuh.com/pre-release/yum/
protect=1

Tests:

Centos: https://devel.ci.wazuh.info/view/Tests/job/Test_unattended/529/console
Ubuntu: https://devel.ci.wazuh.info/view/Tests/job/Test_unattended/530/console
Distributed: https://devel.ci.wazuh.info/view/Tests/job/Test_unattended_distributed/446/console

[okynos]

LGTM

[alberpilot]

LGTM