Add volume snapshots feature

.gitignore

@@ -60,3 +60,6 @@ flycheck_*.el
 
 .idea/
 /.project
+
+# snapshot binaries
+/snapshot/_output

.golintignore

@@ -0,0 +1 @@
+snapshot

Makefile

@@ -12,7 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-clean: clean-aws/efs clean-ceph/cephfs clean-ceph/rbd clean-flex clean-gluster/block clean-gluster/glusterfs clean-iscsi/targetd clean-local-volume/provisioner clean-local-volume/bootstrapper clean-nfs-client clean-nfs
+all: aws/efs ceph/cephfs ceph/rbd flex gluster/block gluster/glusterfs iscsi/targetd local-volume/provisioner local-volume/bootstrapper nfs-client nfs snapshot
+.PHONY: all
+
+clean: clean-aws/efs clean-ceph/cephfs clean-ceph/rbd clean-flex clean-gluster/block clean-gluster/glusterfs clean-iscsi/targetd clean-local-volume/provisioner clean-local-volume/bootstrapper clean-nfs-client clean-nfs clean-snapshot
 .PHONY: clean
 
 test: test-aws/efs test-local-volume/provisioner test-nfs
@@ -158,6 +161,16 @@ clean-openebs:
 	make clean
 .PHONY: clean-openebs
 
+snapshot:
+	cd snapshot; \
+	make
+.PHONY: snapshot
+
+clean-snapshot:
+	cd snapshot; \
+	make clean
+.PHONY: clean-snapshot
+
 push-cephfs-provisioner:
 	cd ceph/cephfs; \
 	make push
@@ -215,4 +228,4 @@ push-openebs-provisioner:
 
 deploy-openebs-provisioner:
 	cd openebs; \
-	make deploy
+	make deploy