statedump: Don't print mem-type numbers

Change-Id: I381bfa9535fe60c37758761d34b98dbbc4e5f569
BUG: 1114188
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/8239
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com>
Tested-by: Justin Clift <justin@gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>