Russian(RU) numeral and ordinal improvements (#374)

Summary:
- added non-typo variant for 11 (одиннадцать)
- added variants for grammatical cases

Pull Request resolved: https://github.com/facebook/duckling/pull/374

Test Plan:
```
:test Duckling.Numeral.RU.Tests
:test Duckling.Ordinal.RU.Tests
```

Reviewed By: stroxler

Differential Revision: D20332223

Pulled By: chessai

fbshipit-source-id: be1c6f6477af56418b69da21f5219ba27b50d0a1

Duckling/Numeral/RU/Corpus.hs

@@ -41,6 +41,7 @@ allExamples = concat
              [ "3"
              , "три"
              , "03"
+             , "трех"
              ]
   , examples (NumeralValue 4)
              [ "4"

Duckling/Numeral/RU/Rules.hs

@@ -232,6 +232,27 @@ threeToNineteenMap = HashMap.fromList
   , ( "девятнадцать", 19)
   ]
 
+threeToNineteenMapGenitive :: HashMap Text Integer
+threeToNineteenMapGenitive = HashMap.fromList
+  [ ( "трех", 3)
+  , ( "четырех", 4)
+  , ( "пяти", 5)
+  , ( "шести", 6)
+  , ( "семи", 7)
+  , ( "восьми", 8)
+  , ( "девяти", 9)
+  , ( "десяти", 10)
+  , ( "одиннадцати", 11)
+  , ( "двенадцати", 12)
+  , ( "тринадцати", 13)
+  , ( "четырнадцати", 14)
+  , ( "пятнадцати", 15)
+  , ( "шестнадцати", 16)
+  , ( "семнадцати", 17)
+  , ( "восемнадцати", 18)
+  , ( "девятнадцати", 19)
+  ]
+
 ruleInteger4 :: Rule
 ruleInteger4 = Rule
   { name = "integer (3..19)"
@@ -244,6 +265,18 @@ ruleInteger4 = Rule
       _ -> Nothing
   }
 
+ruleInteger4Genitive :: Rule
+ruleInteger4Genitive = Rule
+  { name = "integer (3..19)"
+  , pattern =
+    [ regex "(трех|четырнадцати|четырех|пятнадцати|пяти|шестнадцати|шести|семнадцати|семи|восемнадцати|восьми|девятнадцати|девяти|десяти|одиннадцати|двенадцати|тринадцати)"
+    ]
+  , prod = \tokens -> case tokens of
+      (Token RegexMatch (GroupMatch (match:_)):_) ->
+        HashMap.lookup (Text.toLower match) threeToNineteenMapGenitive >>= integer
+      _ -> Nothing
+  }
+
 ruleInteger2 :: Rule
 ruleInteger2 = Rule
   { name = "integer 1"
@@ -287,6 +320,7 @@ rules =
   , ruleInteger2
   , ruleInteger3
   , ruleInteger4
+  , ruleInteger4Genitive
   , ruleInteger5
   , ruleInteger6
   , ruleInteger7

Duckling/Ordinal/RU/Rules.hs

@@ -37,7 +37,7 @@ ordinalsFirstthMap = HashMap.fromList
   , ( "восьм", 8 )
   , ( "девят", 9 )
   , ( "десят", 10 )
-  , ( "одинадцат", 11 )
+  , ( "одиннадцат", 11 )
   , ( "двенадцат", 12 )
   , ( "тринадцат", 13 )
   , ( "четырнадцат", 14 )
@@ -65,7 +65,7 @@ ruleOrdinalsFirstth :: Rule
 ruleOrdinalsFirstth = Rule
   { name = "ordinals (first..19th)"
   , pattern =
-    [ regex "(перв|втор|трет|четверт|пят|шест|седьм|восьм|девят|десят|одинадцат|двенадцат|тринадцат|четырнадцат|пятнадцат|шестнадцат|семнадцат|восемнадцат|девятнадцат|двадцат)(ье(го|й)?|ого|ый|ой|ий|ая|ое|ья)"
+    [ regex "(перв|втор|трет|четверт|пят|шест|седьм|восьм|девят|десят|одиннадцат|двенадцат|тринадцат|четырнадцат|пятнадцат|шестнадцат|семнадцат|восемнадцат|девятнадцат|двадцат)(ье(го|й)?|ого|ый|ой|ий|ая|ое|ья)"
     ]
   , prod = \tokens -> case tokens of
       (Token RegexMatch (GroupMatch (match:_)):_) ->