Add autoselection for betanet and release

basice2e/betanet.txt

+109.169.15.30:22840
+5.12.137.118:22840
+92.246.20.92:22840
+178.16.39.203:22840
+86.135.17.18:22840

basice2e/network.config

@@ -3,6 +3,8 @@ localhost:8440
 # when not set via command line, is used to determine to which network
 # the integration test will be run against.
 
+# Note you can also specify "release" and "betanet" on run.sh
+
 # Betanet gateways
 109.169.15.30:22840
 5.12.137.118:22840

basice2e/release.txt

+34.221.74.216:11420
+52.25.9.28:11420
+54.149.122.115:11420

basice2e/run.sh

@@ -44,7 +44,15 @@ mkdir -p $GATEWAYLOGS
 mkdir -p $CLIENTOUT
 mkdir -p $CLIENTCLEAN
 
-NETWORKENTRYPOINT=$(head -1 network.config)
+if [ "$NETWORKENTRYPOINT" == "betanet" ]
+then
+    NETWORKENTRYPOINT=$(sort -R betanet.txt | head -1)
+elif [ "$NETWORKENTRYPOINT" == "release" ]
+then
+    NETWORKENTRYPOINT=$(sort -R release.txt | head -1)
+else
+    NETWORKENTRYPOINT=$(head -1 network.config)
+fi
 
 echo "NETWORK: $NETWORKENTRYPOINT"