Implements generator cli for secrets (#3531)

Signed-off-by: Codruț Constantin Gușoi <codrut.gusoi@gmail.com>

modules/generate/generate_test.go

@@ -0,0 +1,20 @@
+package generate
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestMain(m *testing.M) {
+	retVal := m.Run()
+
+	os.Exit(retVal)
+}
+
+func TestGetRandomString(t *testing.T) {
+	randomString, err := GetRandomString(4)
+	assert.NoError(t, err)
+	assert.Len(t, randomString, 4)
+}