Add taxonomy to some go pages (#313)

Author: rustagir

source/fundamentals/crud/write-operations/upsert.txt

@@ -4,7 +4,12 @@
 Insert or Update in a Single Operation
 ======================================
 
-.. default-domain:: mongodb
+.. facet::
+   :name: genre
+   :values: reference
+
+.. meta::
+   :keywords: code example, write, add data
 
 .. contents:: On this page
    :local:

source/fundamentals/crud/write-read-pref.txt

@@ -4,6 +4,13 @@
 Modify Execution of CRUD Operations
 ===================================
 
+.. facet::
+   :name: genre
+   :values: reference
+
+.. meta::
+   :keywords: code example, replica set, consistency
+
 .. contents:: On this page
    :local:
    :backlinks: none

source/fundamentals/encrypt-fields.txt

@@ -1,3 +1,10 @@
 .. _golang-fle:
 
+.. facet::
+   :name: genre
+   :values: reference
+
+.. meta::
+   :keywords: privacy, security
+
 .. sharedinclude:: dbx/encrypt-fields.rst

source/fundamentals/enterprise-auth.txt

@@ -4,6 +4,13 @@
 Enterprise Authentication Mechanisms
 ====================================
 
+.. facet::
+   :name: genre
+   :values: reference
+
+.. meta::
+   :keywords: security, code example, credentials
+
 .. contents:: On this page
    :local:
    :backlinks: none

source/fundamentals/geo.txt

@@ -4,7 +4,12 @@
 Work with Geospatial Data
 =========================
 
-.. default-domain:: mongodb
+.. facet::
+   :name: genre
+   :values: reference
+
+.. meta::
+   :keywords: code example, coordinates, location, geographic
 
 .. contents:: On this page
    :local:

source/fundamentals/gridfs.txt

@@ -4,7 +4,12 @@
 GridFS
 ======
 
-.. default-domain:: mongodb
+.. facet::
+   :name: genre
+   :values: reference
+
+.. meta::
+   :keywords: code example, large files, storage, images
 
 .. contents:: On this page
    :local: