v0.13.1

This patch fixes an upgrade regression due to recently implemented static IP allocation and a regression causing etcd not to restart on master reboots (issue #2282).

CHANGES since v0.13.0: 🌈🐞🔧

• Revert static IP allocation logic in Azure CNI, PR 1966 (PR #2315, @JunSun17 )
• Use original FirstConsecutiveStaticIP during upgrade (PR #2327, @JunSun17 )
• Reboot etcd fix (PR #2329, @CecileRobertMichon )