Update quickstart metallb config

For Issue

Closes (link to issue here) #1546 (closed)

Big Bang changes to update quickstart deployment guide

added statusreview label

requested review from @chris.oconnell, @ryan.j.garcia, @ryan.thompson.44, @marknelson, and @michaelmartin

assigned to @benjamin.starks

added kinddocs label

requested review from @aperkins

@andrewshoell @rgsjustins : You have been tagged in this merge request for the purpose of conducting secondary review.

removed review request for @marknelson

added statusdoing label and removed statusreview label

resolved all threads

added 1 commit

• 21b7fd80 - Elaborate on subnet configuration for metallb

Compare with previous version

added statusreview label and removed statusdoing label

changed the description

resolved all threads

added 1 commit

• fcaabad9 - add subnet variables

Compare with previous version

approved this merge request

changed milestone to %2.14.0

resolved all threads