The current logic checks for nodes that started the join process
(based on the snapshot of the environment that was taken by the
operator at that point in time). It will not check the state of
nodes that it is not aware of, i.e. those that it did not capture
initially will not be checked. Hence there is a need to introduce
backoff time as it takes a while before all the nodes start to join
the Cluster.
This is a short term stop gap approach until the Promenade API is ready
for consumption
Change-Id: I2bdf9c970ecb509fe833fd353e6648a97118d79b
ed8107baad