Add line spacing multiplier for CollapsingToolbarLayout

Since there is a problem with a small line spacing between multiline
title of collapsing toolbar in a few locales, that caused the title is
overlapping with each other. Enlarging the line spacing by using
lineSpacingMultiplier to fix it.

Fix: 183223866
Test: visual verified
1) Change to MY locale
2) Navigate to Settings > Sounds & vibration > Do not disturb > Alarms &
other interruptions
3) Observe the title and check if it is overlapping with each other

Change-Id: Ib35ae0edb6fb168293bdb39a926bad5049eece34