Add Fedora 27 support

Removing the (f23,)f24 support they are EOL.
The only non-trivial change is the apache-httpd default worker change,
however might not be bad idea to use `event` instead of `worker`
in the future, but for now keep it AS-IS and continue to use `worker`.

Change-Id: I96d414a30b58bc4b43da45066fdf310a6a830079
Closes-Bug: #1740194
diff --git a/files/rpms/swift b/files/rpms/swift
index 2e09cec..be0db14 100644
--- a/files/rpms/swift
+++ b/files/rpms/swift
@@ -2,7 +2,7 @@
 liberasurecode-devel
 memcached
 pyxattr
-rsync-daemon # dist:f23,f24,f25,f26
+rsync-daemon # dist:f25,f26,f27
 sqlite
 xfsprogs
 xinetd