Use ceil instead of round for relay number rounding

modules/chankeep.py

@@ -74,7 +74,7 @@ def emptyChanAllocate(net, flist, relay, new):
         sum_free = sum(chanfree[0].values())   # 250
         chans_not_covered = toalloc - sum_free # 2148 - 250 = 1898
         relays_needed = chans_not_covered / chanfree[1] # 1898 / 250 = 7.592
-        relays_needed_rounded = round(relays_needed)
+        relays_needed_rounded = ceil(relays_needed)
         debug(f"emptyChanAllocate() secondary allocation sum_free:{sum_free} chans_not_covered:{chans_not_covered} relays_needed:{relays_needed} relays_needed_rounded:{relays_needed_rounded}")
         #correction = round(toalloc - sum(chanfree[0].values()) / chanfree[1])
         correction = relays_needed_rounded