EE generates different Karma fixtures for CE tests

HTML templates sometimes have different content in EE. This can cause several problems: for haml, adding EE-only templates can cause errors on the CE specs.

Problems

• custom components not found. This usually just means extra div rendered, but can cause weird DOM state (and false positives)
• any reactive properties will trigger "blah not found on instance" error.

Examples

• haml example: See discussion
• Vue example: app/assets/javascripts/monitoring/components/dashboard.vue