Add enchant spellchecker

Change-Id: Ifff6e8a50dd58db4f8f4977cef9c8f1a97c155f3
diff --git a/packer/provision/basebuild.sh b/packer/provision/basebuild.sh
index 76ab691..80e8fd3 100644
--- a/packer/provision/basebuild.sh
+++ b/packer/provision/basebuild.sh
@@ -89,6 +89,7 @@
         bzip2 \
         curl \
         ebtables \
+        enchant \
         ethtool \
         git \
         golang-1.12-go \