bootDeploy: ignore suffixes added by boot-deploy when copying kernel (MR 11)

The glob might result in a vmlinuz-* filename that causes mkinitfs to
copy a modified kernel file to the boot-deploy working directory. This
excludes files that boot-deploy has touched from being copied/used by
boot-deploy

(cherry picked from commit 0925cbd8ac)

.gitlab-ci.yml

@@ -31,7 +31,7 @@ gofmt linting:
     - apk -q update --repository http://dl-4.alpinelinux.org/alpine/edge/testing
     - apk -q add --repository http://dl-4.alpinelinux.org/alpine/edge/testing go staticcheck
   script:
-    - .ci/check_linting.sh
+    - .gitlab-ci/check_linting.sh
 
 build:
   stage: build

main.go

@@ -156,9 +156,10 @@ func getHookFiles(filesdir string) misc.StringSet {
 		defer f.Close()
 		s := bufio.NewScanner(f)
 		for s.Scan() {
-			if err := getFile(files, s.Text(), true); err != nil {
+			if !exists(s.Text()) {
 				log.Fatalf("Unable to find file %q required by %q", s.Text(), path)
 			}
+			files[s.Text()] = false
 		}
 		if err := s.Err(); err != nil {
 			log.Fatal(err)
@@ -242,42 +243,13 @@ func getFiles(files misc.StringSet, newFiles misc.StringSet, required bool) erro
 }
 
 func getFile(files misc.StringSet, file string, required bool) error {
-	// Expand glob expression
-	expanded, _ := filepath.Glob(file)
-	if len(expanded) > 0 && expanded[0] != file {
-		for _, path := range expanded {
-			if err := getFile(files, path, required); err != nil {
-				return err
-			}
-		}
-		return nil
-	}
-
-	fileInfo, err := os.Stat(file)
-	if err != nil {
+	if !exists(file) {
 		if required {
 			return errors.New("getFile: File does not exist :" + file)
 		}
 		return nil
 	}
 
-	if fileInfo.IsDir() {
-		// Recurse over directory contents
-		err := filepath.Walk(file, func(path string, f os.FileInfo, err error) error {
-			if err != nil {
-				return err
-			}
-			if f.IsDir() {
-				return nil
-			}
-			return getFile(files, path, required)
-		})
-		if err != nil {
-			return err
-		}
-		return nil
-	}
-
 	files[file] = false
 
 	// get dependencies for binaries
@@ -286,7 +258,8 @@ func getFile(files misc.StringSet, file string, required bool) error {
 		return nil
 	}
 
-	if err := getBinaryDeps(files, file); err != nil {
+	err := getBinaryDeps(files, file)
+	if err != nil {
 		return err
 	}
 
@@ -441,7 +414,6 @@ func getInitfsFiles(files misc.StringSet, devinfo deviceinfo.DeviceInfo) error {
 		"/usr/sbin/telnetd":   false,
 		"/sbin/kpartx":        false,
 		"/etc/deviceinfo":     false,
-		"/usr/bin/unudhcpd":   false,
 	}
 
 	// Hook files & scripts