Handle single quote when searching by keyword. (#2158)

Similarly to other characters, add single quotes to the list of characters to handle when searching by keyword.

Fixes: CV2-5808.

lib/check_search.rb

@@ -55,7 +55,7 @@ def adjust_keyword_filter
     unless @options['keyword'].blank?
       # This regex removes all characters except letters, numbers, hashtag, search operators, emojis and whitespace
       # in any language - stripping out special characters can improve match results
-      @options['keyword'].gsub!(/[^[:word:]\s#~+\-|()"\u{1F600}-\u{1F64F}\u{1F300}-\u{1F5FF}\u{1F680}-\u{1F6FF}\u{1F700}-\u{1F77F}\u{1F780}-\u{1F7FF}\u{1F800}-\u{1F8FF}\u{1F900}-\u{1F9FF}\u{1FA00}-\u{1FA6F}\u{1F1E6}-\u{1F1FF}\u{2600}-\u{26FF}\u{2700}-\u{27BF}]/, ' ')
+      @options['keyword'].gsub!(/[^[:word:]\s#'~+\-|()"\u{1F600}-\u{1F64F}\u{1F300}-\u{1F5FF}\u{1F680}-\u{1F6FF}\u{1F700}-\u{1F77F}\u{1F780}-\u{1F7FF}\u{1F800}-\u{1F8FF}\u{1F900}-\u{1F9FF}\u{1FA00}-\u{1FA6F}\u{1F1E6}-\u{1F1FF}\u{2600}-\u{26FF}\u{2700}-\u{27BF}]/, ' ')
 
       # Set fuzzy matching for keyword search, right now with automatic Levenshtein Edit Distance
       # https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-simple-query-string-query.html

test/lib/check_search_test.rb

@@ -16,6 +16,10 @@ def teardown
     query = 'Something is going to happen on 04/11, reportedly'
     search = CheckSearch.new({ keyword: query }.to_json, nil, @team.id)
     assert_equal 'Something is going to happen on 04 11  reportedly', search.instance_variable_get('@options')['keyword']
+
+    query = "Something is going to happen on Foo's house"
+    search = CheckSearch.new({ keyword: query }.to_json, nil, @team.id)
+    assert_equal "Something is going to happen on Foo's house", search.instance_variable_get('@options')['keyword']
   end
 
   test "should search for array field containing nil values" do