samples/pktgen: Trap SIGINT

Otherwise ^C stops the script, not just pktgen.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

samples/pktgen/pktgen.conf-1-1

@@ -53,6 +53,7 @@ PGDEV=/proc/net/pktgen/eth1
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"
 

samples/pktgen/pktgen.conf-1-1-flows

@@ -61,6 +61,7 @@ PGDEV=/proc/net/pktgen/eth1
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"
 

samples/pktgen/pktgen.conf-1-1-ip6

@@ -54,6 +54,7 @@ PGDEV=/proc/net/pktgen/eth1
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"
 

samples/pktgen/pktgen.conf-1-1-ip6-rdos

@@ -57,6 +57,7 @@ PGDEV=/proc/net/pktgen/eth1
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"
 

samples/pktgen/pktgen.conf-1-1-rdos

@@ -58,6 +58,7 @@ PGDEV=/proc/net/pktgen/eth1
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"
 

samples/pktgen/pktgen.conf-1-2

@@ -63,6 +63,7 @@ PGDEV=/proc/net/pktgen/eth2
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"
 

samples/pktgen/pktgen.conf-2-1

@@ -60,6 +60,7 @@ PGDEV=/proc/net/pktgen/eth1
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"
 

samples/pktgen/pktgen.conf-2-2

@@ -67,6 +67,7 @@ PGDEV=/proc/net/pktgen/eth2
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"