Merge pull request #6598 from erwbgy/master

KubeCon 2017: glossary entry for Persistent Volume Claim
From approver: no new netlify preview available, YOLO bc error seems to be removed in latest.

_data/glossary/persistent-volume-claim.yaml

@@ -0,0 +1,15 @@
+id: persistent-volume-claim
+name: Persistent Volume Claim
+full-link: /docs/concepts/storage/persistent-volumes/
+related:
+- persistent-volume
+- statefulset
+- deployment
+- pod
+tags:
+- core-object
+- storage
+short-description: >
+  Claims storage resources defined in a {% glossary_tooltip text="PersistentVolume (PV)" term_id="persistent-volume" %} so that it can be mounted as a volume in a container.
+long-description: |
+  Specifies the amount of storage, how the storage will be accessed (read-only, read-write and/or exclusive) and how it is reclaimed (retained, recycled or deleted). Details of the storage itself are in the PersistentVolume specification.