storcon: use https for pageservers (#10759)

## Problem

Storage controller uses unsecure http for pageserver API.

Closes: https://github.com/neondatabase/cloud/issues/23734
Closes: https://github.com/neondatabase/cloud/issues/24091

## Summary of changes

- Add an optional `listen_https_port` field to storage controller's Node
state and its API (RegisterNode/ListNodes/etc).
- Allow updating `listen_https_port` on node registration to gradually
add https port for all nodes.
- Add `use_https_pageserver_api` CLI option to storage controller to
enable https.
- Pageserver doesn't support https for now and always reports
`https_port=None`. This will be addressed in follow-up PR.

libs/pageserver_api/src/controller_api.rs

@@ -57,6 +57,7 @@ pub struct NodeRegisterRequest {
 
     pub listen_http_addr: String,
     pub listen_http_port: u16,
+    pub listen_https_port: Option<u16>,
 
     pub availability_zone_id: AvailabilityZone,
 }
@@ -105,6 +106,7 @@ pub struct TenantLocateResponseShard {
 
     pub listen_http_addr: String,
     pub listen_http_port: u16,
+    pub listen_https_port: Option<u16>,
 }
 
 #[derive(Serialize, Deserialize)]
@@ -148,6 +150,7 @@ pub struct NodeDescribeResponse {
 
     pub listen_http_addr: String,
     pub listen_http_port: u16,
+    pub listen_https_port: Option<u16>,
 
     pub listen_pg_addr: String,
     pub listen_pg_port: u16,