LU-4839 tests: Give copytool more time to start

LU-4839 tests: Give copytool more time to start

Copytool can take some time to start, and if the HSM archive directory
is on a busy NFS server, it can take a bit of time for the initial
opens to occur.  This allows those actions more time to complete which
should give this test a better chance of passing correctly.

Test-Parameters: alwaysuploadlogs envdefinitions=SLOW=yes \
mdtfilesystemtype=zfs mdsfilesystemtype=zfs ostfilesystemtype=zfs \
testlist=sanity-hsm,sanity-hsm,sanity-hsm,sanity-hsm

Test-Parameters: alwaysuploadlogs envdefinitions=SLOW=yes,ONLY=60 \
mdtfilesystemtype=ldiskfs mdsfilesystemtype=ldiskfs ostfilesystemtype=ldiskfs \
mdtcount=4 testlist=sanity-hsm,sanity-hsm,sanity-hsm,sanity-hsm

This patch is back-ported from the following one:
Lustre-commit: 6948e80bc149aa689e09334a70941340143fa2ce
Lustre-change: http://review.whamcloud.com/12682

Signed-off-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Change-Id: Ib8828805f52c1f86bf01388606b78ad2c4085acb
Reviewed-on: http://review.whamcloud.com/12823
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Jenkins
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>