Fix #7059 Set expected icmptypes format
Fix #7059 Set expected icmptypes format

icmptype is a comma-separated list in the config. When attempting to save, the array in $_POST['icmptype'] needs to be put into this format in $pconfig in case there are input errors and the user-entered data need to be re-displayed for correction.
phil-davis/pfsense,jxmx/pfsense,dennypage/pfsense,NOYB/pfsense,dennypage/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,jxmx/pfsense,dennypage/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,brunostein/pfsense,phil-davis/pfsense,brunostein/pfsense,NewEraCracker/pfsense,pfsense/pfsense,phil-davis/pfsense,ptorsten/pfsense,NOYB/pfsense,dennypage/pfsense,pfsense/pfsense,jxmx/pfsense,brunostein/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,pfsense/pfsense,pfsense/pfsense,NOYB/pfsense