make rustls and optional feature in both places, organize deps

signal-gateway/Cargo.toml

@@ -9,6 +9,7 @@ workspace = true
 [features]
 default = ["plot"]
 plot = ["prometheus-http-client/plot", "dep:chrono-tz", "dep:rand", "dep:walkdir"]
+rustls-tls = ["prometheus-http-client/rustls-tls"]
 
 [dependencies]
 prometheus-http-client = { workspace = true, default-features = false }
@@ -24,7 +25,6 @@ humantime = { workspace = true }
 hyper = { workspace = true }
 hyper-util = { workspace = true }
 jsonrpsee = { workspace = true }
-reqwest = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 syslog_rfc5424 = { workspace = true }

signal-gateway/src/init_logging.rs

@@ -10,7 +10,9 @@ pub fn init_logging() {
         .with_writer(std::io::stderr)
         .with_file(true)
         .with_line_number(true)
-        .with_env_filter(EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info")))
+        .with_env_filter(
+            EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info")),
+        )
         .init();
 
     // load dotenv file

signal-gateway/src/prometheus/mod.rs

@@ -1,9 +1,8 @@
 use conf::Conf;
 use prometheus_http_client::{
     AlertInfo, AlertsRequest, ExtractLabels, Labels, LabelsRequest, MetricVal, MetricValue,
-    PromRequest, QueryRequest, SeriesRequest,
+    PromRequest, QueryRequest, ReqwestClient, SeriesRequest,
 };
-use reqwest::Client as ReqwestClient;
 use std::error::Error;
 use tracing::info;