Turn on data dataconnect-debug.logs verbosity to -v=2 (#7333)

Author: fredzqm

src/emulator/dataconnectEmulator.ts

@@ -96,6 +96,8 @@ export class DataConnectEmulator implements EmulatorInstance {
   static async generate(args: DataConnectGenerateArgs): Promise<string> {
     const commandInfo = await downloadIfNecessary(Emulators.DATACONNECT);
     const cmd = [
+      "--logtostderr",
+      "-v=2",
       "generate",
       `--service_location=${args.locationId}`,
       `--config_dir=${args.configDir}`,
@@ -112,7 +114,7 @@ export class DataConnectEmulator implements EmulatorInstance {
 
   static async build(args: DataConnectBuildArgs): Promise<BuildResult> {
     const commandInfo = await downloadIfNecessary(Emulators.DATACONNECT);
-    const cmd = ["build", `--config_dir=${args.configDir}`];
+    const cmd = ["--logtostderr", "-v=2", "build", `--config_dir=${args.configDir}`];
 
     const res = childProcess.spawnSync(commandInfo.binary, cmd, { encoding: "utf-8" });
     if (res.error) {

src/emulator/downloadableEmulators.ts

@@ -288,7 +288,7 @@ const Commands: { [s in DownloadableEmulators]: DownloadableEmulatorCommand } =
   },
   dataconnect: {
     binary: `${getExecPath(Emulators.DATACONNECT)}`,
-    args: ["dev"],
+    args: ["--logtostderr", "-v=2", "dev"],
     optionalArgs: [
       "listen",
       "config_dir",