fng-install: Allow to use -postfixes in the machine name, know matched correctly
For example seco-mx8mm-test was not match to the mx8mm defaults, which lead to an error message during installation.
Dear all, On Thursday, 4th September 2025, we will test the new disaster recovery environment. A disaster recovery test will take place between 4:00 PM and 6:00 PM CEST. Please refrain from making any changes, as they will be lost. Once testing is complete, the production environment will be restored. Thank you for your understanding.
For example seco-mx8mm-test was not match to the mx8mm defaults, which lead to an error message during installation.