[fix] ol.primary-list--primary add margin between items

[heyMP]

Description of the issue

ol.primary-list--primary found in pfe-sass and pfe-styles relies on our .pfe-l-grid utility to layout the items in a grid based format. In addition to this, it should also provide a fallback for when the user does not implement .pfe-l-grid.

By default, the ol.primary-list--primary class does not add proper margin between siblings. We should fix that by explicitly adding standard li margin.

Impacted component(s)

• pfe-sass
• pfe-styles

Steps to reproduce

1. Go to https://patternflyelements.com/elements/pfe-styles/demo/
2. Scroll to 'Primary Ordered List'
3. Inspect the ol element
4. Remove the following grid classes pfe-l-grid pfe-m-gutters pfe-m-all-6-col-on-lg

Expected behavior

It should have a standard li margin between each of the li siblings

Screenshots