vendor test tools in submodule

Instead of using the main module we should vendor the test tools in a
different directory. That way we do not add extra dependencies to the
main module which can be problemetic for packages or other users.

This is already done in buildah so this makes us more consitent.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

test/tools/vendor/github.com/vbatts/git-validation/validate/runner.go

@@ -0,0 +1,109 @@
+package validate
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/vbatts/git-validation/git"
+)
+
+// Runner is the for processing a set of rules against a range of commits
+type Runner struct {
+	Root        string
+	Rules       []Rule
+	Results     Results
+	Verbose     bool
+	CommitRange string // if this is empty, then it will default to FETCH_HEAD, then HEAD
+}
+
+// NewRunner returns an initiallized Runner.
+func NewRunner(root string, rules []Rule, commitrange string, verbose bool) (*Runner, error) {
+	newroot, err := filepath.Abs(root)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get absolute path of %q: %s", root, err)
+	}
+	if commitrange == "" {
+		var err error
+		cwd, err := os.Getwd()
+		if err != nil {
+			return nil, err
+		}
+		defer os.Chdir(cwd)
+
+		if err := os.Chdir(newroot); err != nil {
+			return nil, err
+		}
+		commitrange, err = git.FetchHeadCommit()
+		if err != nil {
+			commitrange, err = git.HeadCommit()
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+	return &Runner{
+		Root:        newroot,
+		Rules:       rules,
+		CommitRange: commitrange,
+		Verbose:     verbose,
+	}, nil
+}
+
+// Run processes the rules for each commit in the range provided
+func (r *Runner) Run() error {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+	defer os.Chdir(cwd)
+
+	if err := os.Chdir(r.Root); err != nil {
+		return err
+	}
+
+	// collect the entries
+	c, err := git.Commits(r.CommitRange)
+	if err != nil {
+		return err
+	}
+
+	// run them and show results
+	for _, commit := range c {
+		if os.Getenv("QUIET") == "" {
+			fmt.Printf(" * %s %q ... ", commit["abbreviated_commit"], commit["subject"])
+		}
+		vr := Commit(commit, r.Rules)
+		r.Results = append(r.Results, vr...)
+		_, fail := vr.PassFail()
+		if os.Getenv("QUIET") != "" {
+			if fail != 0 {
+				for _, res := range vr {
+					if !res.Pass {
+						fmt.Printf(" %s - FAIL - %s\n", commit["abbreviated_commit"], res.Msg)
+					}
+				}
+			}
+			// everything else in the loop is printing output.
+			// If we're quiet, then just continue
+			continue
+		}
+		if fail == 0 {
+			fmt.Println("PASS")
+		} else {
+			fmt.Println("FAIL")
+		}
+		for _, res := range vr {
+			if r.Verbose {
+				if res.Pass {
+					fmt.Printf("  - PASS - %s\n", res.Msg)
+				} else {
+					fmt.Printf("  - FAIL - %s\n", res.Msg)
+				}
+			} else if !res.Pass {
+				fmt.Printf("  - FAIL - %s\n", res.Msg)
+			}
+		}
+	}
+	return nil
+}