Merge branch 'r0.5.0' into develop
with static ip in boot params xentools was inconsistently returning dhcp address before static ip gets applied on reboot
Merge pull request #6 from bradenwright/develop

with static ip in boot params xentools was inconsistently returning dhcp...
bumb version to 0.5.1
0.5.1 release
* add the ip pingger to prevent early attempts to bootstrap