sanity: fix volume leakage

Volume created by testcase is not adding to cleanup list, hence it results in
volume leaking. This change fixes this issue.

Took the opportunity to fix a typo in comment.

pkg/sanity/controller.go

@@ -263,7 +263,7 @@ var _ = DescribeSanity("Controller Service [Controller Server]", func(sc *Sanity
 			// minVolCount is the minimum number of volumes expected to exist,
 			// based on which paginated volume listing is performed.
 			minVolCount := 3
-			// maxEntried is the maximum entries in list volume request.
+			// maxEntries is the maximum entries in list volume request.
 			maxEntries := 2
 			// existing_vols to keep a record of the volumes that should exist
 			existing_vols := map[string]bool{}
@@ -358,6 +358,8 @@ var _ = DescribeSanity("Controller Service [Controller Server]", func(sc *Sanity
 			Expect(err).NotTo(HaveOccurred())
 			Expect(vol).NotTo(BeNil())
 			Expect(vol.Volume).NotTo(BeNil())
+			// Register the volume so it's automatically cleaned
+			cl.RegisterVolume(vol.Volume.VolumeId, VolumeInfo{VolumeID: vol.Volume.VolumeId})
 			existing_vols[vol.Volume.VolumeId] = true
 
 			vols, err = c.ListVolumes(