Move match function to helpers

Update match function to operate on familiar names

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)

reference/helpers.go

@@ -1,5 +1,7 @@
 package reference
 
+import "path"
+
 // IsNameOnly returns true if reference only contains a repo name.
 func IsNameOnly(ref Named) bool {
 	if _, ok := ref.(NamedTagged); ok {
@@ -28,3 +30,13 @@ func FamiliarString(ref Reference) string {
 	}
 	return ref.String()
 }
+
+// FamiliarMatch reports whether ref matches the specified pattern.
+// See https://godoc.org/path#Match for supported patterns.
+func FamiliarMatch(pattern string, ref Reference) (bool, error) {
+	matched, err := path.Match(pattern, FamiliarString(ref))
+	if namedRef, isNamed := ref.(Named); isNamed && !matched {
+		matched, _ = path.Match(pattern, FamiliarName(namedRef))
+	}
+	return matched, err
+}