HA tests TC056, TC057 and TC058 are missing from Yardstick
test case list. Missing white space added to tc056.rst.
Change-Id: Id56a22ad96af8c3d05d95fb58259e9683ce9fab0
Signed-off-by: Mika Rautakumpu <mika.rautakumpu@nokia.com>
    opnfv_yardstick_tc052.rst
    opnfv_yardstick_tc053.rst
    opnfv_yardstick_tc054.rst
+   opnfv_yardstick_tc056.rst
+   opnfv_yardstick_tc057.rst
+   opnfv_yardstick_tc058.rst
 
 IPv6
 ----
 
 |              |                                                              |
 +--------------+--------------------------------------------------------------+
 |configuration | This test case needs two configuration files:                |
-|              | 1) test case file:opnfv_yardstick_tc056.yaml                 |
+|              | 1) test case file: opnfv_yardstick_tc056.yaml                |
 |              | -Attackers: see above "attackers" description                |
 |              | -waiting_time: which is the time (seconds) from the process  |
 |              | being killed to stoping monitors the monitors                |