Reformat imports to a consistent style for imports

rustfmt.toml configuration:
  imports_granularity = "One"
  group_imports = "One"

streamer/src/packet.rs

@@ -1,17 +1,20 @@
 //! The `packet` module defines data structures and methods to pull data from the network.
-use crate::{
-    recvmmsg::{recv_mmsg, NUM_RCVMMSGS},
-    socket::SocketAddrSpace,
+use {
+    crate::{
+        recvmmsg::{recv_mmsg, NUM_RCVMMSGS},
+        socket::SocketAddrSpace,
+    },
+    solana_metrics::inc_new_counter_debug,
+    std::{io::Result, net::UdpSocket, time::Instant},
 };
-pub use solana_perf::packet::{
-    limited_deserialize, to_packets_chunked, Packets, PacketsRecycler, NUM_PACKETS,
-    PACKETS_PER_BATCH,
+pub use {
+    solana_perf::packet::{
+        limited_deserialize, to_packets_chunked, Packets, PacketsRecycler, NUM_PACKETS,
+        PACKETS_PER_BATCH,
+    },
+    solana_sdk::packet::{Meta, Packet, PACKET_DATA_SIZE},
 };
 
-use solana_metrics::inc_new_counter_debug;
-pub use solana_sdk::packet::{Meta, Packet, PACKET_DATA_SIZE};
-use std::{io::Result, net::UdpSocket, time::Instant};
-
 pub fn recv_from(obj: &mut Packets, socket: &UdpSocket, max_wait_ms: u64) -> Result<usize> {
     let mut i = 0;
     //DOCUMENTED SIDE-EFFECT
@@ -73,10 +76,14 @@ pub fn send_to(
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-    use std::io;
-    use std::io::Write;
-    use std::net::{SocketAddr, UdpSocket};
+    use {
+        super::*,
+        std::{
+            io,
+            io::Write,
+            net::{SocketAddr, UdpSocket},
+        },
+    };
 
     #[test]
     fn test_packets_set_addr() {