bumper: Paginate over commits on tagged update policy

Currently on tagged update policy, the bumper looks for the first 100
commits to match the tag.
On Multus the commits are not in this range anymore.
Increase the search range to 1000 commits, using pagination.

Signed-off-by: Ram Lavi <ralavi@redhat.com>

tools/bumper/component_commands.go

@@ -202,11 +202,10 @@ func (componentOps *gitComponent) getLatestTaggedFromBranch(repo, owner, branch,
 		return "", "", errors.Wrap(err, "Failed to get release tag refs from github client API")
 	}
 
-	branchCommits, _, err := componentOps.githubInterface.listCommits(owner, repo, &github.CommitsListOptions{ListOptions: github.ListOptions{PerPage: 100}, SHA: branch})
-	if err != nil {
-		return "", "", errors.Wrap(err, "Failed to get release tag refs from github client API")
-	}
-
+	const (
+		maxPagePaginate = 10
+		pageSize        = 100
+	)
 	// look for the first tag that belongs to the chosen branch, going over from last tag
 	for i := len(tagRefs) - 1; i >= 0; i-- {
 		tag := tagRefs[i]
@@ -216,14 +215,21 @@ func (componentOps *gitComponent) getLatestTaggedFromBranch(repo, owner, branch,
 			return "", "", errors.Wrap(err, "Failed to get commit-sha from tag name")
 		}
 
-		for _, commit := range branchCommits {
-			if commit.GetSHA() == commitShaOfTag {
-				return tagName, commit.GetSHA(), nil
+		for pageIdx := 0; pageIdx < maxPagePaginate; pageIdx++ {
+			branchCommits, _, err := componentOps.githubInterface.listCommits(owner, repo, &github.CommitsListOptions{ListOptions: github.ListOptions{PerPage: pageSize, Page: pageIdx}, SHA: branch})
+			if err != nil {
+				return "", "", errors.Wrap(err, "Failed to get release tag refs from github client API")
+			}
+
+			for _, commit := range branchCommits {
+				if commit.GetSHA() == commitShaOfTag {
+					return tagName, commit.GetSHA(), nil
+				}
 			}
 		}
 	}
 
-	return "", "", fmt.Errorf("Error: tag not found in branch %s\n tagRefs=\n%v\nbranchCommits=\n%v\n", branch, tagRefs, branchCommits)
+	return "", "", fmt.Errorf("Error: tag not found in branch %s on last %d commits\n", branch, maxPagePaginate*pageSize)
 }
 
 // getLatestFromBranch get the latest HEAD commit-sha under a given branch, using "latest" Update policy