updating circuit_maintenance_parser/parser.py Html.clean_line method to strip out occurences of \r\n and \r and replace them with \n instead, so that the newlines and carriage returns are formalized. Updated the tests to remove \r\n from the expected output

Author: huacchob

circuit_maintenance_parser/parser.py

@@ -210,7 +210,7 @@ def clean_line(line):
         try:
             return line.text.strip()
         except AttributeError:
-            return line.strip()
+            return line.strip().replace("\r\n", "\n").replace("\r", "\n")
 
 
 class EmailDateParser(Parser):