update github.com/hashicorp/go-getter

vendor/github.com/hashicorp/go-getter/detect_file.go

@@ -36,6 +36,13 @@ func (d *FileDetector) Detect(src, pwd string) (string, bool, error) {
 				if err != nil {
 					return "", true, err
 				}
+
+				// The symlink itself might be a relative path, so we have to
+				// resolve this to have a correctly rooted URL.
+				pwd, err = filepath.Abs(pwd)
+				if err != nil {
+					return "", true, err
+				}
 			}
 		}
 

vendor/vendor.json

@@ -1132,10 +1132,10 @@
 			"revision": "875fb671b3ddc66f8e2f0acc33829c8cb989a38d"
 		},
 		{
-			"checksumSHA1": "Qw7bz5IlDicreRjfyiB8QBJi0Fc=",
+			"checksumSHA1": "aOWXSbYAdK3PBSMNFiK2ze4lPEc=",
 			"path": "github.com/hashicorp/go-getter",
-			"revision": "0eb633db32e432fabba9eca8fa21192fab2b96be",
-			"revisionTime": "2016-08-30T22:50:22Z"
+			"revision": "2fbd997432e72fe36060c8f07ec1eaf98d098177",
+			"revisionTime": "2016-09-12T21:42:52Z"
 		},
 		{
 			"path": "github.com/hashicorp/go-getter/helper/url",