v2.2.12

This is the 2.2.12 release, which contains:

[#711] -- There are too many log print to /var/log/waagent.log
[#714] -- Questionable split call in common/conf.py
[#717] -- Remove extension logs during deprovision
[#720] -- Reset of RDMA drivers not taking effect
[#721] -- WALA deprovision process not clean up all cloudinit files
[#724] -- Location of configuration file should be editable issue
[#725] -- v2.2.11 can throw unexpected exceptions on provisioned VMs
[#727] -- v2.2.11 cannot update status for RDFE VMs