Add support for setting root ssh pubkey to proxmox containers.

doc/topics/cloud/proxmox.rst

@@ -156,6 +156,10 @@ with their default settings listed.
     # Network interfaces, netX
     net0: name=eth0,bridge=vmbr0,ip=dhcp
 
+    # Public key to add to /root/.ssh/authorized_keys.
+    pubkey: 'ssh-rsa AAAAB3NzaC1yc2EAAAADAQABA...'
+
+
 QEMU
 ====
 

salt/cloud/clouds/proxmox.py

@@ -726,6 +726,9 @@ def create_node(vm_, newid):
             if prop in vm_:  # if the property is set, use it for the VM request
                 newnode[prop] = vm_[prop]
 
+        if 'pubkey' in vm_:
+            newnode['ssh-public-keys'] = vm_['pubkey']
+
         # inform user the "disk" option is not supported for LXC hosts
         if 'disk' in vm_:
             log.warning('The "disk" option is not supported for LXC hosts and was ignored')