GF-51380: Add an assertion for minute picker
GF-51380: Add an assertion for minute picker

In some scenario, improper value is given for setValue() parameter.
In this case we cannot use getHours() or getMinutes().

Enyo-DCO-1.1-Signed-off-by: David Um <david.um@lge.com>

mcanthony/moonstone,mcanthony/moonstone,enyojs/moonstone,mcanthony/moonstone