Change Auctions to Eight Lease Periods Per Slot (#2862)

* initial patch

* fix tests

* fix benchmarks

* expose `SlotRange` consts

* Update Cargo.lock

* fix tests

Co-authored-by: Robert Habermeier <rphmeier@gmail.com>

polkadot/runtime/common/src/slot_range.rs

@@ -14,7 +14,47 @@
 // You should have received a copy of the GNU General Public License
 // along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
 
-//! The SlotRange struct which succinctly handles the ten values that
-//! represent all sub ranges between 0 and 3 inclusive.
+//! The SlotRange struct which succinctly handles the 36 values that
+//! represent all sub ranges between 0 and 7 inclusive.
 
-slot_range_helper::generate_slot_range!(Zero(0), One(1), Two(2), Three(3));
+slot_range_helper::generate_slot_range!(Zero(0), One(1), Two(2), Three(3), Four(4), Five(5), Six(6), Seven(7));
+
+// Will generate:
+// pub enum SlotRange {
+// 	ZeroZero,		0
+// 	ZeroOne,		1
+// 	ZeroTwo,		2
+// 	ZeroThree,		3
+// 	ZeroFour,		4
+// 	ZeroFive,		5
+// 	ZeroSix,		6
+// 	ZeroSeven,		7
+// 	OneOne,			8
+// 	OneTwo,			9
+// 	OneThree,		10
+// 	OneFour,		11
+// 	OneFive,		12
+// 	OneSix,			13
+// 	OneSeven,		14
+// 	TwoTwo,			15
+// 	TwoThree,		16
+// 	TwoFour,		17
+// 	TwoFive,		18
+// 	TwoSix,			19
+// 	TwoSeven,		20
+// 	ThreeThree,		21
+// 	ThreeFour,		22
+// 	ThreeFive,		23
+// 	ThreeSix,		24
+// 	ThreeSeven,		25
+// 	FourFour,		26
+// 	FourFive,		27
+// 	FourSix,		28
+// 	FourSeven,		29
+// 	FiveFive,		30
+// 	FiveSix,		31
+// 	FiveSeven,		32
+// 	SixSix,			33
+// 	SixSeven,		34
+// 	SevenSeven,		35
+// }