CA-122205: Roll back previous fix

Roll back the fixes that ignore file unavailability exceptions
(commit 2171f7d21fa523807a0288c56488e70eac2862d8,
4e927946c0e765cacee249b1de2f67785ddd61de and
68286d168cfe5813b4e13c1484b00941703123d9). Issue being fixed by
correcting the original changes made for CP-5818.

Signed-off-by: Chandrika Srinivasan <chandrika.srinivasan@citrix.com>