CA-234494: correctly update other_config.default_template
CA-234494: correctly update other_config.default_template

An incorrect other_config update slipped in the backward-compatibility
code. This fixes it.

Signed-off-by: Marcello Seri <34fd14c67154e888f6587d5c0e7eadd13aaf7ca7@citrix.com>

srowe/xen-api,euanh/xen-api,thomassa/xen-api,euanh/xen-api,euanh/xen-api,Frezzle/xen-api,thomassa/xen-api,srowe/xen-api,srowe/xen-api,euanh/xen-api,Frezzle/xen-api,thomassa/xen-api,srowe/xen-api,thomassa/xen-api,thomassa/xen-api,Frezzle/xen-api,euanh/xen-api,thomassa/xen-api,srowe/xen-api,euanh/xen-api,Frezzle/xen-api,Frezzle/xen-api