Add Fedora 30 as a supported distro

With Fedora 29 now officially EOL [1] we need to start the move to 30. A
later change will remove f29 support from devstack entirely once
fedora-latest moves to the based f30 image.

[1] https://lists.fedoraproject.org/archives/list/devel-announce@lists.fedoraproject.org/thread/VUK3CJ5LO4ROUH3JTCDVHYAVVYAOCU62/

Change-Id: If87fe93757129f931a3417fc6275ffad280cdf46
diff --git a/files/rpms/dstat b/files/rpms/dstat
index d7b272a..ad51966 100644
--- a/files/rpms/dstat
+++ b/files/rpms/dstat
@@ -1,2 +1,2 @@
-dstat # not:f29
-pcp-system-tools # dist:f29
+dstat # not:f29,f30
+pcp-system-tools # dist:f29,f30