Docs - Add 11.5 ES reindex info
What does this MR do?
This MR adds another point to the Elasticsearch integration doc's "troubleshooting section". This new point is about the necessity to reindex Elasticsearch after updating to GitLab 11.5.
Author's checklist
-
Apply the correct labels and milestone -
Crosslink the document from the higher-level index -
Crosslink the document from other subject-related docs -
Feature moving tiers? Make sure the change is also reflected in features.yml -
Correctly apply the product badges and tiers -
Port the MR to EE (or backport from CE): always recommended, required when the ee-compat-checkjob fails
Review checklist
-
Your team's review (required) -
PM's review (recommended, but not a blocker) -
Technical writer's review (required) -
Merge the EE-MR first, CE-MR afterwards