[PVE-User] Change pveproxy to tls1.2

[Dietmar Maurer]

> It's hardcoded but works perfectly (I guess until next upgrade, but anyway).
> 
> A way how to disable sslv3 and support tls1.2 and 1.1 is that:
> 
> Edit file /usr/bin/pveproxy
> Find "method => "tlsv1", comment it out.
> Now "ssleay" supports all tls versions and ssl versions.
> It's relatively easy to disable sslv3 by adding a line
> 
> "sslv3 => 0,"

just committed a fix for that:

https://git.proxmox.com/?p=pve-manager.git;a=commitdiff;h=f6bc4a73d0f252bbae1d5a769068351ed1cc33a1

I disabled both - just to be sure:

+           sslv2 => 0,
+           sslv3 => 0,