fix golint errors in pkg/volume/host_path

pkg/volume/BUILD

@@ -90,7 +90,7 @@ filegroup(
         "//pkg/volume/gcepd:all-srcs",
         "//pkg/volume/git_repo:all-srcs",
         "//pkg/volume/glusterfs:all-srcs",
-        "//pkg/volume/host_path:all-srcs",
+        "//pkg/volume/hostpath:all-srcs",
         "//pkg/volume/iscsi:all-srcs",
         "//pkg/volume/local:all-srcs",
         "//pkg/volume/nfs:all-srcs",

pkg/volume/hostpath/BUILD

@@ -12,7 +12,7 @@ go_library(
         "doc.go",
         "host_path.go",
     ],
-    importpath = "k8s.io/kubernetes/pkg/volume/host_path",
+    importpath = "k8s.io/kubernetes/pkg/volume/hostpath",
     deps = [
         "//pkg/util/mount:go_default_library",
         "//pkg/volume:go_default_library",

pkg/volume/hostpath/doc.go

@@ -14,6 +14,6 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// Package host_path contains the internal representation of hostPath
+// Package hostpath contains the internal representation of hostPath
 // volumes.
-package host_path // import "k8s.io/kubernetes/pkg/volume/host_path"
+package hostpath // import "k8s.io/kubernetes/pkg/volume/hostpath"

pkg/volume/hostpath/host_path.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package host_path
+package hostpath
 
 import (
 	"fmt"
@@ -32,7 +32,7 @@ import (
 	"k8s.io/kubernetes/pkg/volume/validation"
 )
 
-// This is the primary entrypoint for volume plugins.
+// ProbeVolumePlugins is the primary entrypoint for volume plugins.
 // The volumeConfig arg provides the ability to configure volume behavior.  It is implemented as a pointer to allow nils.
 // The hostPathPlugin is used to store the volumeConfig and give it, when needed, to the func that Recycles.
 // Tests that exercise recycling should not use this func but instead use ProbeRecyclablePlugins() to override default behavior.

pkg/volume/hostpath/host_path_test.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package host_path
+package hostpath
 
 import (
 	"fmt"