ifreload: address module always reconfigures (dels/adds) addresses when user

Ticket: CM-8561
Reviewed By: kanna, julien
Testing Done: Tested on amd64 switch

ifreload always deletes and adds back a host IP address
if that address is specified without a "/" and without a "netmask" config.

The problem is fixed so that _inet_address_convert_to_cidr() handles a missing
"/" and a missing "netmask" config. The host addresses is no longer added to a
list of addresses we will del/add. The patch was simply to add a case for the
missing "/" and a missing "netmask".

addons/address.py

@@ -153,6 +153,11 @@ class address(moduleBase):
                     prefixlen = IPNetwork('%s' %addr +
                                 '/%s' %netmask).prefixlen
                     newaddr = addr + '/%s' %prefixlen
+                else:
+                    # we are here because there is no slash (/xx) and no netmask
+                    # just let IPNetwork handle the ipv4 or ipv6 address mask
+                    prefixlen = IPNetwork(addr).prefixlen
+                    newaddr = addr + '/%s' %prefixlen
                 newaddrs.append(newaddr)
 
                 attrs = {}