5.x-final.md - Add more sanity checks

doc/5.x-final.md

@@ -17,6 +17,9 @@ git push origin 5.X
 ## 2: Sanity checks
 
 * Check open PRs for `5.X`: https://github.com/civicrm/civicrm-core/pulls
+* Check regressions/criticals in Gitlab:
+    * https://lab.civicrm.org/dev/core/issues?label_name[]=regression
+    * https://lab.civicrm.org/dev/core/issues?label_name[]=priority%3Acritical
 * Check release notes: https://github.com/civicrm/civicrm-core/tree/5.X/release-notes
 * In Jenkins, review the scheduled tests for `5.X` and determine if anything should block the release.
     * https://test.civicrm.org/job/CiviCRM-Core-Matrix/
@@ -32,6 +35,8 @@ git push origin 5.X
     * https://github.com/civicrm/civicrm-joomla/commits/5.X
     * https://github.com/civicrm/civicrm-packages/commits/5.X
     * https://github.com/civicrm/civicrm-wordpress/commits/5.X
+* Perform a UI-level installation on some hydra sites. (Console output provides credentials)
+    * https://test.civicrm.org/view/Sites/job/hydra-sites/
 
 ## 3: Prepare and identify the final tarballs