Retry VXLAN interface creation if it fails
Retry VXLAN interface creation if it fails

Otherwise, the process can exit prematurely if flanneld is started
before the host networking configuration is not yet completed.

MohdAhmad/flannel,dcbw/flannel,svdata/flannel,EverythingMe/flannel,ingvagabund/flannel,coreos/flannel,MohdAhmad/flannel,coreos/flannel,lihuanghai/flannel,bprashanth/flannel,imzhulei/flannel,adiclepcea/flannel,EverythingMe/flannel,dcbw/flannel,Yhgenomics/flannel,dcbw/flannel,imzhulei/flannel,lvlv/flannel,sujitfulse/flannel,jonboulle/flannel,ingvagabund/flannel,ingvagabund/flannel,bprashanth/flannel,cusspvz/flannel,jonboulle/flannel,EverythingMe/flannel,cusspvz/flannel,eyakubovich/flannel,Yhgenomics/flannel,endocode/flannel,coreos/flannel,imzhulei/flannel,endocode/flannel,kelcecil/flannel,cusspvz/flannel,endocode/flannel,wikimedia/operations-debs-flannel,MohdAhmad/flannel,lvlv/flannel,kelcecil/flannel,sujitfulse/flannel,svdata/flannel,eyakubovich/flannel,kelcecil/flannel,lihuanghai/flannel,eyakubovich/flannel,wikimedia/operations-debs-flannel,svdata/flannel,adiclepcea/flannel,adiclepcea/flannel,jonboulle/flannel,sujitfulse/flannel,Yhgenomics/flannel,wikimedia/operations-debs-flannel,lihuanghai/flannel,lvlv/flannel,bprashanth/flannel