Drop Fedora 29 support

With fedora-latest now using Fedora 30 images and Fedora 29 itself EOL
we can now remove support for it from devstack. This change also cleans
up references to earlier Fedora releases under files/rpms/.

Change-Id: I24332f7016ebb549ea678acf677c477b55ec4d4b
diff --git a/files/rpms/general b/files/rpms/general
index 279546f..e3d20b3 100644
--- a/files/rpms/general
+++ b/files/rpms/general
@@ -9,9 +9,9 @@
 graphviz # needed only for docs
 httpd
 httpd-devel
-iptables-services  # NOPRIME f25,f26,f27,f28,f29,f30
+iptables-services  # NOPRIME f30
 java-1.7.0-openjdk-headless  # NOPRIME rhel7
-java-1.8.0-openjdk-headless  # NOPRIME f25,f26,f27,f28,f29,f30
+java-1.8.0-openjdk-headless  # NOPRIME f30
 libffi-devel
 libjpeg-turbo-devel # Pillow 3.0.0
 libxml2-devel # lxml
@@ -27,7 +27,7 @@
 postgresql-devel  # psycopg2
 psmisc
 pyOpenSSL # version in pip uses too much memory
-python3-devel # f29,f30
+python3-devel # f30
 python-devel
 redhat-rpm-config # missing dep for gcc hardening flags, see rhbz#1217376
 systemd-devel # for systemd-python