fix(GitRepository): add renormalize() method

- `renormalize` field is "false" by default
- sets `renormalize` field to true
- if `renormalize` is set to true, "--renormalize" argument is appended to the `git add` command.

Author: Algomorph

java/com/google/copybara/git/GitRepository.java

@@ -1004,21 +1004,30 @@ public void abortCherryPick() throws RepoException {
   public class AddCmd {
 
     private final boolean force;
+    private final boolean renormalize;
     private final boolean all;
     private final Iterable<String> files;
     @Nullable private final String pathSpecFromFile;
 
-    private AddCmd(boolean force, boolean all, Iterable<String> files, String pathSpecFromFile) {
+
+    private AddCmd(boolean force, boolean all, Iterable<String> files, String pathSpecFromFile, boolean renormalize) {
       this.force = force;
       this.all = all;
+      this.renormalize = renormalize;
       this.files = checkNotNull(files);
       this.pathSpecFromFile = pathSpecFromFile;
     }
 
     /** Force the add */
     @CheckReturnValue
     public AddCmd force() {
-      return new AddCmd(/*force=*/ true, all, files, pathSpecFromFile);
+      return new AddCmd(/*force=*/ true, all, files, pathSpecFromFile, renormalize);
+    }
+
+    /** Renormalize the add */
+    @CheckReturnValue
+    public AddCmd renormalize() {
+      return new AddCmd(/*force=*/ true, all, files, pathSpecFromFile, true);
     }
 
     /** Add all the unstagged files to the index */
@@ -1027,7 +1036,7 @@ public AddCmd all() {
       Preconditions.checkState(Iterables.isEmpty(files), "'all' and passing files is incompatible");
       Preconditions.checkState(
           pathSpecFromFile == null, "'all' and pathSpecFromFile is incompatible");
-      return new AddCmd(force, /*all=*/ true, files, pathSpecFromFile);
+      return new AddCmd(force, /*all=*/ true, files, pathSpecFromFile, renormalize);
     }
 
     /** Configure the files to add to the index */
@@ -1036,7 +1045,7 @@ public AddCmd files(Iterable<String> files) {
       Preconditions.checkState(!all, "'all' and passing files is incompatible");
       Preconditions.checkState(
           pathSpecFromFile == null, "'pathSpecFromFile' and passing files is incompatible");
-      return new AddCmd(force, /*all=*/ false, files, pathSpecFromFile);
+      return new AddCmd(force, /*all=*/ false, files, pathSpecFromFile, renormalize);
     }
 
     /** Configure the files to add to the index */
@@ -1045,7 +1054,7 @@ public AddCmd pathSpecFromFile(String pathSpecFromFile) {
       Preconditions.checkState(!all, "'pathSpecFromFile' and passing files is incompatible");
       Preconditions.checkState(
           Iterables.isEmpty(files), "'pathSpecFromFile' and passing files is incompatible");
-      return new AddCmd(force, /*all=*/ false, files, pathSpecFromFile);
+      return new AddCmd(force, /*all=*/ false, files, pathSpecFromFile, renormalize);
     }
 
     /** Configure the files to add to the index */
@@ -1063,7 +1072,9 @@ public void run() throws RepoException {
       if (all) {
         params.add("--all");
       }
-
+      if (renormalize) {
+        params.add("--renormalize");
+      }
       if (pathSpecFromFile != null) {
         params.add("--pathspec-from-file=" + pathSpecFromFile);
       }
@@ -1078,7 +1089,7 @@ public void run() throws RepoException {
    */
   @CheckReturnValue
   public AddCmd add() {
-    return new AddCmd(/*force*/ false, /*all*/ false, /*files*/ ImmutableSet.of(), null);
+    return new AddCmd(/*force*/ false, /*all*/ false, /*files*/ ImmutableSet.of(), null, false);
   }
 
   /**