Force the filter to return an array at all times to ensure the look-up using index works properly
Force the filter to return an array at all times to ensure the
look-up using index works properly

Signed-off-by: Chris Harding <4cc77c7b27b225de1c4ced482f955c0435c1407c@citrix.com>

stephen-turner/xen-api-sdk,agimofcarmen/xen-api-sdk,xapi-project/xen-api-sdk,xapi-project/xen-api-sdk,xapi-project/xen-api-sdk,xapi-project/xen-api-sdk,stephen-turner/xen-api-sdk,xapi-project/xen-api-sdk,stephen-turner/xen-api-sdk,cheng-z/xen-api-sdk,stephen-turner/xen-api-sdk,kc284/xen-api-sdk,agimofcarmen/xen-api-sdk,kc284/xen-api-sdk,kc284/xen-api-sdk,xapi-project/xen-api-sdk,stephen-turner/xen-api-sdk,jonludlam/xen-api-sdk,cheng-z/xen-api-sdk,jonludlam/xen-api-sdk,kc284/xen-api-sdk,agimofcarmen/xen-api-sdk,stephen-turner/xen-api-sdk,kc284/xen-api-sdk,kc284/xen-api-sdk,cheng-z/xen-api-sdk,jonludlam/xen-api-sdk,agimofcarmen/xen-api-sdk,cheng-z/xen-api-sdk,jonludlam/xen-api-sdk