Introduce new preview auto-scaling mode for ARC. (#2153)

Co-authored-by: Cory Miller <cory-miller@github.com>
Co-authored-by: Nikola Jokic <nikola-jokic@github.com>
Co-authored-by: Ava Stancu <AvaStancu@github.com>
Co-authored-by: Ferenc Hammerl <fhammerl@github.com>
Co-authored-by: Francesco Renzi <rentziass@github.com>
Co-authored-by: Bassem Dghaidi <Link-@github.com>

controllers/actions.github.com/utils.go

@@ -0,0 +1,27 @@
+package actionsgithubcom
+
+import (
+	"k8s.io/apimachinery/pkg/util/rand"
+)
+
+func FilterLabels(labels map[string]string, filter string) map[string]string {
+	filtered := map[string]string{}
+
+	for k, v := range labels {
+		if k != filter {
+			filtered[k] = v
+		}
+	}
+
+	return filtered
+}
+
+var letterRunes = []rune("abcdefghijklmnopqrstuvwxyz1234567890")
+
+func RandStringRunes(n int) string {
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = letterRunes[rand.Intn(len(letterRunes))]
+	}
+	return string(b)
+}