Update logging and parameter for self-signed cert

lib/service/service.go

@@ -5316,7 +5316,7 @@ func initSelfSignedHTTPSCert(cfg *servicecfg.Config) (err error) {
 		proxyHost, _, err := net.SplitHostPort(addr.String())
 		if err != nil {
 			// log and skip error since this is a nice to have
-			cfg.Log.Errorf("Error parsing proxy.public_address %v, skipping adding to self-signed cert: %v", addr.String(), err)
+			cfg.Log.Warnf("Error parsing proxy.public_address %v, skipping adding to self-signed cert: %v", addr.String(), err)
 			continue
 		}
 		// If the address is a IP have it added as IP SAN

lib/srv/db/access_test.go

@@ -1991,7 +1991,7 @@ func (c *testContext) createUserAndRole(ctx context.Context, t *testing.T, userN
 
 // makeTLSConfig returns tls configuration for the test's tls listener.
 func (c *testContext) makeTLSConfig(t *testing.T) *tls.Config {
-	creds, err := cert.GenerateSelfSignedCert([]string{"localhost"}, []string{})
+	creds, err := cert.GenerateSelfSignedCert([]string{"localhost"}, nil)
 	require.NoError(t, err)
 	cert, err := tls.X509KeyPair(creds.Cert, creds.PrivateKey)
 	require.NoError(t, err)

lib/utils/utils_test.go

@@ -91,7 +91,7 @@ func TestHostUUIDRegenerateEmpty(t *testing.T) {
 func TestSelfSignedCert(t *testing.T) {
 	t.Parallel()
 
-	creds, err := cert.GenerateSelfSignedCert([]string{"example.com"}, []string{})
+	creds, err := cert.GenerateSelfSignedCert([]string{"example.com"}, nil)
 	require.NoError(t, err)
 	require.NotNil(t, creds)
 	require.Equal(t, 4, len(creds.PublicKey)/100)