Call go fmt in travis

Not all checks are passing yet but we should still enforce
the most basic one.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)

.travis.yml

@@ -21,6 +21,7 @@ install:
   - export PATH=$PATH:/tmp/protobuf/bin/
 
 script:
+  - make fmt
   - make binaries
   - make coverage
   - sudo PATH=$PATH GOPATH=$GOPATH make root-coverage

api/types/mount/mount.proto

@@ -12,16 +12,16 @@ import "gogoproto/gogo.proto";
 // The Mount type follows the structure of the mount syscall, including a type,
 // source, target and options.
 message Mount {
-       // Type defines the nature of the mount.
-       string type = 1;
+	// Type defines the nature of the mount.
+	string type = 1;
 
-       // Source specifies the name of the mount. Depending on mount type, this
-       // may be a volume name or a host path, or even ignored.
-       string source = 2;
+	// Source specifies the name of the mount. Depending on mount type, this
+	// may be a volume name or a host path, or even ignored.
+	string source = 2;
 
-       // Target path in container
-       string target = 3;
+	// Target path in container
+	string target = 3;
 
-       // Options specifies zero or more fstab style mount options.
-       repeated string options = 4;
+	// Options specifies zero or more fstab style mount options.
+	repeated string options = 4;
 }