Fix upgrade from installer
Reason for Closing:
Reason for Blocked:
Support Suite Ticket:
The nightly installer emits an error message about fgrep and fails to identify existing FreeNAS installations for upgrade. This is because the installer doesn't have fgrep on it.
[install.sh] Fix upgrades from installer fgrep doesn't exist on the installer, so it would never detect an existing freenas-boot pool. Ticket: #78231