Merge pull request #792 from rsteube/actionexeccommand-log

ActionExecCommandE: added log

defaultActions.go

@@ -64,6 +64,7 @@ func ActionExecCommandE(name string, arg ...string) func(f func(output []byte, e
 			cmd := c.Command(name, arg...)
 			cmd.Stdout = &stdout
 			cmd.Stderr = &stderr
+			LOG.Printf("executing %#v", cmd.String())
 			if err := cmd.Run(); err != nil {
 				if exitErr, ok := err.(*exec.ExitError); ok {
 					exitErr.Stderr = stderr.Bytes() // seems this needs to be set manually due to stdout being collected?