Tasks running for 24 hours should allow to continue as far as they are still making progress

The precondition is that very task should report its "progress" consistently, which isn't always true with our current implementation :-(.

Signed-off-by: Zheng Li <zheng.li@eu.citrix.com>
CA-67468: Refresh all sessions being used by VM import.

Signed-off-by: John Else <john.else@citrix.com>
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 <john.else@citrix.com>
Merge pull request #936 from johnelse/ca-67468-sanibel

SANIBEL-LCM: CA-67468: Allow VM imports to take over 24 hours without failing.
Fix definitions of configuration files in xapi.spec.in.

Signed-off-by: Jerome Maloberti <jerome.maloberti@citrix.com>
Merge pull request #937 from johnelse/pool-conf-sanibel

SANIBEL-LCM: Fix definitions of configuration files in xapi.spec.in.