Linux Install Errors when /opt and /opt/sisense are both separate filesystems

I have found a bug in the Linux installer when both /opt and /opt/sisense are separate filesystems.  The installer will give an error like ""Sisense /opt minimum requierment disk size: 50GB", even if the /opt/sisense directory is greater than the minimum size.

This check happens in the file "installer/02_sisense_validations/remote.sh", in the "validate_opt_disk_configuration()" function.  If the /opt filesystem exists, the code does not also check for /opt/sisense.  This can easily be worked around by having the code check for /opt/sisense first, and for /opt second if the first is not found, then the code will continue to work as expected.