Sentry integration for storage. (#2926)

Added basic instrumentation to integrate sentry with the proxy, pageserver, and safekeeper processes.
Currently in sentry there are three projects, one for each process. Sentry url is sent to all three processes separately via cli args.

proxy/src/main.rs

@@ -28,6 +28,7 @@ use std::{borrow::Cow, future::Future, net::SocketAddr};
 use tokio::{net::TcpListener, task::JoinError};
 use tracing::info;
 use utils::project_git_version;
+use utils::sentry_init::{init_sentry, release_name};
 
 project_git_version!(GIT_VERSION);
 
@@ -45,6 +46,9 @@ async fn main() -> anyhow::Result<()> {
         .with_target(false)
         .init();
 
+    // initialize sentry if SENTRY_DSN is provided
+    let _sentry_guard = init_sentry(release_name!(), &[]);
+
     let arg_matches = cli().get_matches();
 
     let tls_config = match (