gopacket: add sleep when error to lower the cpu presure
gopacket: add sleep when error to lower the cpu presure

Change-Id: Ie2ca1873f64b9d5d8e175cca2d508af2ea35c0aa
Reviewed-on: http://softwarefactory-project.io/r/4957
Reviewed-by: Sylvain Baubeau <b0a7dc08a3f38d713e107103b0a85b0badc14b84@redhat.com>
Tested-by: Sylvain Baubeau <b0a7dc08a3f38d713e107103b0a85b0badc14b84@redhat.com>
Workflow: Sylvain Baubeau <b0a7dc08a3f38d713e107103b0a85b0badc14b84@redhat.com>
Tested-by: Jenkins CI <d95b56ce41a2e1ac4cecdd398defd7414407cc08@softwarefactory-project.io>

skydive-project/skydive,lebauce/skydive,lebauce/skydive,lebauce/skydive,lebauce/skydive,skydive-project/skydive,redhat-cip/skydive,safchain/skydive,lebauce/skydive,lebauce/skydive,skydive-project/skydive,skydive-project/skydive,safchain/skydive,safchain/skydive,skydive-project/skydive,safchain/skydive,lebauce/skydive,safchain/skydive,safchain/skydive,safchain/skydive,redhat-cip/skydive,skydive-project/skydive,skydive-project/skydive,redhat-cip/skydive,safchain/skydive,lebauce/skydive