CA-216244: Handle unicode characters in static VDI config
CA-216244: Handle unicode characters in static VDI config

The static VDI config file includes the SR's device_config, the contents
of which is dependent on the SR type. This change allows the static-vdi
script to handle unicode characters in device_config.

Signed-off-by: John Else <37b74501daa612e48fea94f9846ed4ddeb6a8f07@citrix.com>

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