Merge remote-tracking branch 'upstream/master'

Author: caitlindavey

.backportrc.json

@@ -5,7 +5,14 @@
   // the branches available to backport to
   "targetBranchChoices": [
     "master",
+    "v6.6",
+    "v6.5",
+    "v6.4",
+    "v6.3",
+    "v6.2",
+    "v6.1",
     "v6.0",
+    "v5.9",
     "v5.8",
     "v5.7",
     "v5.6",

.github/pull_request_template.md

@@ -11,3 +11,4 @@ Staging - <https://docs-mongodbcom-staging.corp.mongodb.com/drivers/docsworker-x
 - [ ] Did you run a spell-check?
 - [ ] Did you run a grammar-check?
 - [ ] Are all the links working?
+- [ ] Are the [facets and meta keywords](https://wiki.corp.mongodb.com/display/DE/Docs+Taxonomy) accurate?