LU-14270 tests: delay node's power up

LU-14270 tests: delay node's power up

In CS a node in UNCLEAN state can be STONITHed after
it has passed power down and power up already.

The patch adds ha_power_up_delay() in order to delay
node's power up until CRM state became OFFLINE when
failover pair is set and for $NODE_UP_DELAY seconds otherwise.
LOAD_TIMEOUT is added in order to ha_load_timeout be tunable.
The failover pair list for all victims are to be set via new
-f option.

ha_powermanage() is added to control node state by pm, (designed
by Maxim Storchak <maxim.storchak@hpe.com>).
PM_HOST is added in order to specify powermanage host, default
is $(hostname).

Test-Parameters: trivial
Signed-off-by: Elena Gryaznova <elena.gryaznova@hpe.com>
HPE-bug-id: LUS-8610
Reviewed-by: Maxim Storchak <maxim.storchak@hpe.com>
Reviewed-by: Andriy Skulysh <andriy.skulysh@hpe.com>
Change-Id: Ia192200b9ff61c17a67fc16858938f24ade46e23
Reviewed-on: https://review.whamcloud.com/41070
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Wei Liu <sarah@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>