CA-67468: Update VM import task progress regularly.
CA-67468: Update VM import task progress regularly.

The GC times out all tasks which are older than 24 hours if they don't
update their progress between each GC sweep, which happens every 30
seconds.

Previously the task would round its progress to a multiple of 1/50,
however this could easily mean that its progress would not be updated
often enough. This change means that a VM import task will update its
progress every ten seconds.

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

rafalmiel/xen-api,cheng-z/xen-api,djs55/xen-api,koushikcgit/xen-api,thomassa/xen-api,huizh/xen-api,rafalmiel/xen-api,vasilenkomike/xen-api,salvocambria/xen-api,cheng--zhang/xen-api,vasilenkomike/xen-api,srowe/xen-api,srowe/xen-api,salvocambria/xen-api,ravippandey/xen-api,robertbreker/xen-api,guard163/xen-api,vasilenkomike/xen-api,cheng--zhang/xen-api,anoobs/xen-api,cheng--zhang/xen-api,cheng-z/xen-api,thomassa/xen-api,agimofcarmen/xen-api,euanh/xen-api,koushikcgit/xen-api,simonjbeaumont/xen-api,salvocambria/xen-api,simonjbeaumont/xen-api,simonjbeaumont/xen-api,thomassa/xen-api,agimofcarmen/xen-api,thomassa/xen-api,djs55/xen-api,robertbreker/xen-api,euanh/xen-api,koushikcgit/xen-api,agimofcarmen/xen-api,huizh/xen-api,djs55/xen-api,rafalmiel/xen-api,koushikcgit/xen-api,simonjbeaumont/xen-api,thomassa/xen-api,robertbreker/xen-api,rafalmiel/xen-api,robertbreker/xen-api,jjd27/xen-api,rafalmiel/xen-api,Frezzle/xen-api,cheng-z/xen-api,thomassa/xen-api,Frezzle/xen-api,cheng-z/xen-api,vasilenkomike/xen-api,anoobs/xen-api,srowe/xen-api,ravippandey/xen-api,cheng-z/xen-api,cheng--zhang/xen-api,simonjbeaumont/xen-api,Frezzle/xen-api,anoobs/xen-api,salvocambria/xen-api,simonjbeaumont/xen-api,cheng-z/xen-api,agimofcarmen/xen-api,jjd27/xen-api,robertbreker/xen-api,huizh/xen-api,huizh/xen-api,jjd27/xen-api,huizh/xen-api,euanh/xen-api,euanh/xen-api,koushikcgit/xen-api,ravippandey/xen-api,jjd27/xen-api,guard163/xen-api,euanh/xen-api,robertbreker/xen-api,Frezzle/xen-api,huizh/xen-api,cheng--zhang/xen-api,cheng--zhang/xen-api,djs55/xen-api,anoobs/xen-api,salvocambria/xen-api,ravippandey/xen-api,guard163/xen-api,cheng--zhang/xen-api,Frezzle/xen-api,agimofcarmen/xen-api,vasilenkomike/xen-api,djs55/xen-api,koushikcgit/xen-api,guard163/xen-api,euanh/xen-api,djs55/xen-api,srowe/xen-api,anoobs/xen-api,rafalmiel/xen-api,anoobs/xen-api,agimofcarmen/xen-api,ravippandey/xen-api,ravippandey/xen-api,guard163/xen-api,srowe/xen-api,vasilenkomike/xen-api,guard163/xen-api,salvocambria/xen-api,cheng-z/xen-api,jjd27/xen-api,jjd27/xen-api