openl2tp: Fix ptests

- Detect active network interface to use, instead of asking user, this needs
  to run in automation
- Find the location of ppp_null.so with find instead of rpm, rpm is a distro choice
  it can be assumed to be always there.
- Add missing runtime deps for ptests
- Kill openl2tpd started by run-ptest script before exiting, otherwise
  ptest runner hangs forever.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit d30427f475f273ab8c5dd83b2c076bb4fc8a9a82)
Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-networking/recipes-protocols/openl2tp/openl2tp/run-ptest

@@ -30,9 +30,7 @@ else
 fi
 
 #read -p "Please input the network interface you use to test(such as eth0, em1 etc):" ETH_TEST
-echo "Please input the network interface you use to test(such as eth0, em1 etc):"
-read ETH_TEST > /dev/null
-
+ETH_TEST=`ip route get 8.8.8.8 | awk -- '{print $5}'`
 if [ x"$ETH_TEST" = x ]; then
     exit_cus "The network interface cannot be null" 1
 fi
@@ -73,7 +71,7 @@ lsmod | grep l2tp_ppp > /dev/null || exit_cus "FAIL: Load module l2tp_ppp" 2
 
 # start openl2tpd
 ps aux | grep openl2tpd | grep -v grep > /dev/null && killall openl2tpd > /dev/null
-ppp_path=`rpm -ql openl2tp | grep ppp_null.so`
+ppp_path=`find / -name ppp_null.so`
 echo "test it here"
 /usr/sbin/openl2tpd -d all -D -f -p ${ppp_path} &  > /dev/null
 
@@ -95,3 +93,4 @@ else
 fi
 
 restore_file
+ps aux | grep openl2tpd | grep -v grep > /dev/null && killall openl2tpd > /dev/null

meta-networking/recipes-protocols/openl2tp/openl2tp_1.8.bb

@@ -92,3 +92,4 @@ do_install_ptest () {
 }
 
 RDEPENDS:${PN} = "ppp ppp-l2tp bash"
+RDEPENDS:${PN}-ptest += "rpcbind kernel-module-l2tp-ppp procps-ps tcl"