Description of problem:
While configuring Standby DB server from appliance_console, tool is not asking for initialise external storage like master does.

Version-Release number of selected component (if applicable):
5.7.0.17

How reproducible:
Trying to configure standby DB server from appliance_console

Steps to Reproduce:
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Actual results:
It is not asking for initialise external storage like master does

Expected results:
It also needs to ask for initialising external storage

Additional info:
This results in, when you failover to standby node, actually standby node is filling db data into /var partition as it doesn't have separated storage partition like master.