Make clippy _a little_ more annoying (#10570)

* Clippy: +complexity

* Update client/cli/src/arg_enums.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update bin/node/inspect/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update primitives/keystore/src/testing.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update frame/elections/src/lib.rs

Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>

* Update primitives/npos-elections/fuzzer/src/reduce.rs

Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>

* Incorporating feedback

* No need for Ok

* Additional

* Needed slice

* Wigy's suggestions on less derefs

* fix count

* reverting changes brought in by option_map_unit_fn

* add --all-targets

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>

substrate/frame/contracts/src/storage/meter.rs

@@ -592,8 +592,7 @@ mod tests {
 						contract: BOB,
 						amount: Deposit::Charge(<Test as Config>::Currency::minimum_balance() * 2),
 						terminated: false,
-					}],
-					..Default::default()
+					}]
 				}
 			)
 		});
@@ -663,8 +662,7 @@ mod tests {
 							amount: Deposit::Charge(2),
 							terminated: false
 						}
-					],
-					..Default::default()
+					]
 				}
 			)
 		});
@@ -717,8 +715,7 @@ mod tests {
 							amount: Deposit::Charge(12),
 							terminated: false
 						}
-					],
-					..Default::default()
+					]
 				}
 			)
 		});