Mark the status in the kep-template provisional (#1348)

I can see why we might mark it "implemented" if we consider this document itself a KEP, however the other fields are mostly fillers as well, so I think it makes sense to mark it provisional by default since a new KEP will always be provisional.

Signed-off-by: jbarrick@mesosphere.com <jbarrick@mesosphere.com>

keps/0000-kep-template.md

@@ -10,7 +10,7 @@ owners:
 editor: TBD
 creation-date: yyyy-mm-dd
 last-updated: yyyy-mm-dd
-status: implemented
+status: provisional
 see-also:
   - KEP-1
   - KEP-2
@@ -159,4 +159,4 @@ Similar to the `Drawbacks` section the `Alternatives` section is used to highlig
 
 Use this section if you need things from the project/owner.
 Examples include a new subproject, repos requested, github details.
-Listing these here allows an owner to get the process for these resources started right away.
+Listing these here allows an owner to get the process for these resources started right away.