[1790] Untabify files

tests/lettuce/configurations/xfrin/inmem_slave.conf

@@ -11,7 +11,7 @@
         "database_file": "data/inmem-xfrin.sqlite3",
         "datasources": [ {
             "type": "memory",
-	    "class": "IN",
+            "class": "IN",
             "zones": [ {
                 "origin": "example.org",
                 "file": "data/inmem-xfrin.sqlite3",

tests/lettuce/features/inmemory_over_sqlite3.feature

@@ -33,7 +33,7 @@ Feature: In-memory zone using SQLite3 backend
         A query for mail.example.org should have rcode NXDOMAIN
         When I send bind10 the command Xfrin retransfer example.org IN 127.0.0.1 47807
         Then wait for new bind10 stderr message XFRIN_TRANSFER_SUCCESS not XFRIN_XFR_PROCESS_FAILURE
-	Then wait for new bind10 stderr message AUTH_LOAD_ZONE
+        Then wait for new bind10 stderr message AUTH_LOAD_ZONE
 
         A query for www.example.org should have rcode NOERROR
         The answer section of the last query response should be