add vpn servers 1,2,3,5,6 to batman v15 domain, with port 50001

These servers will accept VPN connections for batman v15 on a different
port than used so far, to prevent batman v13 nodes from connecting to the
v15 mesh.

domains/ffhb_batv15.conf

@@ -51,10 +51,30 @@
 				backbone = {
 					limit = 1,
 					peers = {
+						vpn01 = {
+							key = 'df444c4366880735d8101ec4e8bcd8288a7e617024c08f0f81027927ba794f9f',
+							remotes = {'"vpn01.bremen.freifunk.net" port 50001', '"vpn01.ffhb.de" port 50001'},
+						},
+						vpn02 = {
+							key = '93a15a14d85a165b86624c89d69c481043cb60542bfa3d2896615b66a57ab02c',
+							remotes = {'"vpn02.bremen.freifunk.net" port 50001', '"vpn02.ffhb.de" port 50001'},
+						},
+						vpn03 = {
+							key = '6c16136b58da06e3cc83bc92ef09bb19b7dfa787e390929a0ac0d4bbebddee2b',
+							remotes = {'"vpn03.bremen.freifunk.net" port 50001', '"vpn03.ffhb.de" port 50001'},
+						},
 						vpn04 = {
 							key = '8ef6aea3ab0716c26037f4a08c5606512bfec42dd035ad3505c92fded37e1740',
 							remotes = {'"vpn04.bremen.freifunk.net" port 50000', '"vpn04.ffhb.de" port 50000'},
 						},
+						vpn05 = {
+							key = '6cff5957231ca2936aabaa75ae5a7985f4077246b8956273b2ce2da559f344a9',
+							remotes = {'"vpn05.bremen.freifunk.net" port 50001', '"vpn05.ffhb.de" port 50001'},
+						},
+						vpn06 = {
+							key = '99cb85ea2e6346b52abf5eb5ca824f7f037324d4e476f4f068c48b9da98f30e3',
+							remotes = {'"vpn06.bremen.freifunk.net" port 50001', '"vpn06.ffhb.de" port 50001'},
+						},
 					},
 				},
 			},