replace exitnode IPs with hostnames

at the time of commit, dns is configured like so:

exit.sudomesh.org
64.71.176.94
hurricane-electric

exit1.sudomesh.org
208.70.31.83
internet-archive

exit2.sudomesh.org
107.170.219.5
digital-ocean

I left one hardcoded IP in there just in case

files/opt/mesh/templates/etc/config/tunneldigger

@@ -1,14 +1,12 @@
 config broker 'main'
-       list address '64.71.176.94:8942'
-       list address '64.71.176.94:443'
-       list address '45.34.140.42:8942'
-       list address '45.34.140.42:443'
-       list address '142.254.26.9:8942'#not sure who/what this is?
-       list address '104.236.181.202:8942'#sudoroom.org
-       list address '104.131.158.147:8942'#omnicommones.org
-       list address '107.170.219.5:8942'#builds.sudomesh.org
-       #list address '104.236.181.226:8942'
-       #list address '104.236.181.226:8943'
+       list address 'exit.sudomesh.org:8942'
+       list address 'exit.sudomesh.org:443'
+       list address 'exit1.sudomesh.org:8942'
+       list address 'exit1.sudomesh.org:443'     
+       list address 'exit2.sudomesh.org:8942'
+       list address 'exit2.sudomesh.org:443'
+       list address '107.170.219.5:8942'
+       list address '107.170.219.5:443'
        option uuid '<%= id %>'
        option interface 'l2tp0'
        option bind_to_interface 'eth1'