Dynamic management of Jenkins nodes in Azure issue

[Vitaly Karasik]

I'm trying to use https://wiki.jenkins.io/display/JENKINS/Azure+VM+Agents+plugin for dynamic management of Jenkins nodes in Azure. 

As far as I see, this plugin support only user/password, not key authentication. So I configured user/password credentials, I added 'chpasswd' for setting this password for relevant user into 'Initialization Script', but it doesn't work.

I'm able to login to automatically launched VM with my  key, and I see that /etc/shadow wasn't modified during boot.
Any ideas?

Any alternatives for this plugin?

TIA,

Vitaly