License install fails with 'License is already issued for another host' error

Sometimes, the IT Analytics license installation fails with the below error:

License is already issued for another host.

This error is mainly observed on Linux-based systems.

To fix this error:

Ensure you enter the correct host string on the VEMS portal as displayed by the utilities, such as:
```
/opt/aptare/utils/reportConfig.sh
```
or
```
/opt/aptare/utils/VxLicGetHostLock.sh
```
The host string entered on VEMS must also include [sha512].
reportConfig.sh and VxLicGetHostLock.sh use hostname --fqdn command to get the hostname of the system and to create the host string.
Ensure hostname --fqdn returns a fully qualified host name. For example, the command output must have at least one dot (.) character.
If the host is not configured with DNS, ensure that /etc/hosts file on the system has the host resolution of the IP of the system with the fully qualified host name as the first entry (<IP of the system> <FQHN of the system>).
For example, a host with abc as host name and xyz.com as domain name:
```
1.2.3.4  abc.xyz.com
```