python3-betamax: fix ptests

A number of tests require internet access - set a valid DNS in resolv.conf
so the tests don't fail.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-python/recipes-devtools/python/python3-betamax/run-ptest

@@ -1,3 +1,11 @@
 #!/bin/sh
 
+
+
+if ! nslookup httpbin.org >/dev/null 2>&1 ; then
+    trap 'mv /etc/resolv.conf.bak /etc/resolv.conf' INT EXIT
+    mv /etc/resolv.conf /etc/resolv.conf.bak    
+    echo "nameserver 8.8.8.8" > /etc/resolv.conf
+fi
+
 pytest --automake