Validate that the Mobile Client settings have a valid RADIUS server selected as the source for user authentication when EAP-RADIUS is selected as the phase 1 authentication method for mobile IPsec. Fixes #5219.
Validate that the Mobile Client settings have a valid RADIUS server selected
as the source for user authentication when EAP-RADIUS is selected as the
phase 1 authentication method for mobile IPsec. Fixes #5219.

ptorsten/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,pfsense/pfsense,ch1c4um/pfsense,NOYB/pfsense,NOYB/pfsense,dennypage/pfsense,ch1c4um/pfsense,NewEraCracker/pfsense,ch1c4um/pfsense,brunostein/pfsense,NOYB/pfsense,dennypage/pfsense,ptorsten/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,ch1c4um/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,dennypage/pfsense,jxmx/pfsense,dennypage/pfsense,brunostein/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,jxmx/pfsense,jxmx/pfsense,BlackstarGroup/pfsense,brunostein/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,pfsense/pfsense,phil-davis/pfsense,BlackstarGroup/pfsense