rename src/api2/sync.rs -> src/api2/pull.rs

Use "pull" instead of "sync", because this also indicates a
direction (like "sync from").

src/api2.rs

@@ -7,7 +7,7 @@ pub mod reader;
 mod subscription;
 pub mod types;
 pub mod version;
-pub mod sync;
+pub mod pull;
 
 use proxmox::api::list_subdirs_api_method;
 use proxmox::api::router::SubdirMap;
@@ -21,9 +21,9 @@ pub const SUBDIRS: SubdirMap = &[
     ("backup", &backup::ROUTER),
     ("config", &config::ROUTER),
     ("nodes", &NODES_ROUTER),
+    ("pull", &pull::ROUTER),
     ("reader", &reader::ROUTER),
     ("subscription", &subscription::ROUTER),
-    ("sync", &sync::ROUTER),
     ("version", &version::ROUTER),
 ];