Reduce number of bits in generated test cert

Add config entry for the number of bits to use in the auto generate TLS
certificate for the master server and reduce it to 512 for the
integration test.  This reduces the time needed to generate the
certificate in the integration test.

lib/config/definitions.js

@@ -65,6 +65,13 @@ MasterGroup.define({
 	optional: true,
 	initial_value: "database/certificates/cert.key",
 });
+MasterGroup.define({
+	name: "tls_bits",
+	title: "TLS Bits",
+	description: "Number of bits to use for auto generated TLS certificate.",
+	type: "number",
+	initial_value: 2048,
+});
 MasterGroup.define({
 	name: "auth_secret",
 	title: "Master Authentication Secret",

master.js

@@ -1155,6 +1155,7 @@ async function startServer() {
 	// Create a self signed certificate if the certificate files doesn't exist
 	if (httpsPort && !await fs.exists(tls_cert) && !await fs.exists(tls_key)) {
 		await generateSSLcert({
+			bits: masterConfig.get("master.tls_bits"),
 			sslCertPath: tls_cert,
 			sslPrivKeyPath: tls_key,
 			doLogging: true,

test/integration/index.js

@@ -77,6 +77,7 @@ before(async function() {
 	await exec(`node master --config ${masterConfigPath} config set master.auth_secret TestSecretDoNotUse`);
 	await exec(`node master --config ${masterConfigPath} config set master.http_port 8880`);
 	await exec(`node master --config ${masterConfigPath} config set master.https_port 4443`);
+	await exec(`node master --config ${masterConfigPath} config set master.tls_bits 512`);
 	await exec(`node master --config ${masterConfigPath} config set master.heartbeat_interval 0.25`);
 	await exec(`node master --config ${masterConfigPath} config set master.connector_shutdown_timeout 2`);