Add more instructions for vpn docs for generating and add key to keychain
Add more instructions for vpn docs for generating and add key to keychain

Capgemini/Apollo,Capgemini/Apollo,atsaki/Apollo,mehulsbhatt/Apollo,Capgemini/Apollo,siliconmeadow/Apollo,siliconmeadow/Apollo,phungmanhcuong/Appolo,enxebre/Apollo,ravbaba/Apollo,mehulsbhatt/Apollo,phungmanhcuong/Appolo,enxebre/Apollo,atsaki/Apollo,ravbaba/Apollo