Reformat imports to a consistent style for imports

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

client-test/tests/client.rs

@@ -1,44 +1,46 @@
-use serde_json::{json, Value};
-use serial_test::serial;
-use solana_client::{
-    pubsub_client::PubsubClient,
-    rpc_client::RpcClient,
-    rpc_config::{RpcAccountInfoConfig, RpcProgramAccountsConfig},
-    rpc_response::SlotInfo,
-};
-use solana_rpc::{
-    optimistically_confirmed_bank_tracker::OptimisticallyConfirmedBank,
-    rpc_pubsub_service::{PubSubConfig, PubSubService},
-    rpc_subscriptions::RpcSubscriptions,
-};
-use solana_runtime::{
-    bank::Bank,
-    bank_forks::BankForks,
-    commitment::{BlockCommitmentCache, CommitmentSlots},
-    genesis_utils::{create_genesis_config, GenesisConfigInfo},
-};
-use solana_sdk::{
-    clock::Slot,
-    commitment_config::CommitmentConfig,
-    native_token::sol_to_lamports,
-    pubkey::Pubkey,
-    rpc_port,
-    signature::{Keypair, Signer},
-    system_program, system_transaction,
-};
-use solana_streamer::socket::SocketAddrSpace;
-use solana_test_validator::TestValidator;
-use std::{
-    collections::HashSet,
-    net::{IpAddr, SocketAddr},
-    sync::{
-        atomic::{AtomicBool, Ordering},
-        Arc, RwLock,
+use {
+    serde_json::{json, Value},
+    serial_test::serial,
+    solana_client::{
+        pubsub_client::PubsubClient,
+        rpc_client::RpcClient,
+        rpc_config::{RpcAccountInfoConfig, RpcProgramAccountsConfig},
+        rpc_response::SlotInfo,
     },
-    thread::sleep,
-    time::{Duration, Instant},
+    solana_rpc::{
+        optimistically_confirmed_bank_tracker::OptimisticallyConfirmedBank,
+        rpc_pubsub_service::{PubSubConfig, PubSubService},
+        rpc_subscriptions::RpcSubscriptions,
+    },
+    solana_runtime::{
+        bank::Bank,
+        bank_forks::BankForks,
+        commitment::{BlockCommitmentCache, CommitmentSlots},
+        genesis_utils::{create_genesis_config, GenesisConfigInfo},
+    },
+    solana_sdk::{
+        clock::Slot,
+        commitment_config::CommitmentConfig,
+        native_token::sol_to_lamports,
+        pubkey::Pubkey,
+        rpc_port,
+        signature::{Keypair, Signer},
+        system_program, system_transaction,
+    },
+    solana_streamer::socket::SocketAddrSpace,
+    solana_test_validator::TestValidator,
+    std::{
+        collections::HashSet,
+        net::{IpAddr, SocketAddr},
+        sync::{
+            atomic::{AtomicBool, Ordering},
+            Arc, RwLock,
+        },
+        thread::sleep,
+        time::{Duration, Instant},
+    },
+    systemstat::Ipv4Addr,
 };
-use systemstat::Ipv4Addr;
 
 #[test]
 fn test_rpc_client() {