[fastboot] Update path to `fastboot`

CIPD should provide in the working directory

Change-Id: Ic1c8168a8228708dd1626a369bd7a7d73e9de17d
diff --git a/cmd/botanist/zedboot.go b/cmd/botanist/zedboot.go
index bfc2a79..f444628 100644
--- a/cmd/botanist/zedboot.go
+++ b/cmd/botanist/zedboot.go
@@ -107,7 +107,7 @@
 	f.StringVar(&cmd.propertiesFile, "properties", "/etc/botanist/config.json", "path to file of device properties")
 
 	f.StringVar(&cmd.cmdlineFile, "cmdline-file", "", "path to a file containing additional kernel command-line arguments")
-	f.StringVar(&cmd.fastbootTool, "fastboot-tool", "/usr/bin/fastboot", "path to the fastboot tool.")
+	f.StringVar(&cmd.fastbootTool, "fastboot-tool", "./fastboot/fastboot", "path to the fastboot tool.")
 	f.BoolVar(&cmd.fastboot, "fastboot", false, "If set, -fastboot-tool will be used to put the device into zedboot before "+
 		"doing anything else. Must be set together with -zedboot")
 }
@@ -360,7 +360,7 @@
 }
 
 func (cmd *ZedbootCommand) Execute(ctx context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
-	flag :=	 f.Lookup("properties")
+	flag := f.Lookup("properties")
 	log.Printf("properties flag: %v", flag)
 	if cmd.fastboot {
 		if cmd.zedbootImage == "" {