Add individual_calls parameter to set IndividualCalls

[Griphon]

Pull Request (PR) description

Playing with firewalld i've faced with some errors in debian. Changing IndividualCalls parameter to yes perfectly fixes the problem and firewalld working as expected so I've added it to parameters.

This Pull Request (PR) fixes the following issues

firewalld[63415]: ERROR: '/usr/sbin/iptables-restore -w -n' failed: iptables-restore v1.8.2 (nf_tables): 
                                                           line 4: RULE_REPLACE failed (No such file or directory): rule in chain INPUT
                                                           line 4: RULE_REPLACE failed (No such file or directory): rule in chain OUTPUT
firewalld[63415]: ERROR: COMMAND_FAILED: '/usr/sbin/iptables-restore -w -n' failed: iptables-restore v1.8.2 (
                                                           line 4: RULE_REPLACE failed (No such file or directory): rule in chain INPUT
                                                           line 4: RULE_REPLACE failed (No such file or directory): rule in chain OUTPUT