remove additional f18 references

f18 has been EOL for 6 weeks now, time to purge it from devstack

Change-Id: I5aac2c63b2f4cd8b01ae685b1acf4c188637558b
diff --git a/files/rpms/cinder b/files/rpms/cinder
index 199ae10..423d57c 100644
--- a/files/rpms/cinder
+++ b/files/rpms/cinder
@@ -4,4 +4,4 @@
 python-devel
 postgresql-devel
 iscsi-initiator-utils
-python-lxml         #dist:f18,f19,f20,rhel7
+python-lxml         #dist:f19,f20,rhel7
diff --git a/files/rpms/glance b/files/rpms/glance
index 25c5d39..c886ece 100644
--- a/files/rpms/glance
+++ b/files/rpms/glance
@@ -9,8 +9,8 @@
 python-devel
 python-eventlet
 python-greenlet
-python-lxml         #dist:f18,f19,f20,rhel7
-python-paste-deploy #dist:f18,f19,f20,rhel7
+python-lxml         #dist:f19,f20,rhel7
+python-paste-deploy #dist:f19,f20,rhel7
 python-routes
 python-sqlalchemy
 python-wsgiref
diff --git a/files/rpms/horizon b/files/rpms/horizon
index 59503cc..2dd24e0 100644
--- a/files/rpms/horizon
+++ b/files/rpms/horizon
@@ -16,8 +16,8 @@
 python-migrate
 python-mox
 python-nose
-python-paste        #dist:f18,f19,f20
-python-paste-deploy #dist:f18,f19,f20
+python-paste        #dist:f19,f20
+python-paste-deploy #dist:f19,f20
 python-routes
 python-sphinx
 python-sqlalchemy
diff --git a/files/rpms/keystone b/files/rpms/keystone
index 99e8524..7182091 100644
--- a/files/rpms/keystone
+++ b/files/rpms/keystone
@@ -1,9 +1,9 @@
 python-greenlet
 libxslt-devel       # dist:f20
-python-lxml         #dist:f18,f19,f20
-python-paste        #dist:f18,f19,f20
-python-paste-deploy #dist:f18,f19,f20
-python-paste-script #dist:f18,f19,f20
+python-lxml         #dist:f19,f20
+python-paste        #dist:f19,f20
+python-paste-deploy #dist:f19,f20
+python-paste-script #dist:f19,f20
 python-routes
 python-sqlalchemy
 python-webob
diff --git a/files/rpms/neutron b/files/rpms/neutron
index 42d7f68..06ea0ea 100644
--- a/files/rpms/neutron
+++ b/files/rpms/neutron
@@ -11,8 +11,8 @@
 python-iso8601
 python-kombu
 #rhel6 gets via pip
-python-paste        # dist:f18,f19,f20,rhel7
-python-paste-deploy # dist:f18,f19,f20,rhel7
+python-paste        # dist:f19,f20,rhel7
+python-paste-deploy # dist:f19,f20,rhel7
 python-qpid
 python-routes
 python-sqlalchemy
diff --git a/files/rpms/nova b/files/rpms/nova
index a607d92..45d6e0b 100644
--- a/files/rpms/nova
+++ b/files/rpms/nova
@@ -28,11 +28,11 @@
 python-lockfile
 python-migrate
 python-mox
-python-paramiko # dist:f18,f19,f20,rhel7
+python-paramiko # dist:f19,f20,rhel7
 # ^ on RHEL6, brings in python-crypto which conflicts with version from
 # pip we need
-python-paste        # dist:f18,f19,f20,rhel7
-python-paste-deploy # dist:f18,f19,f20,rhel7
+python-paste        # dist:f19,f20,rhel7
+python-paste-deploy # dist:f19,f20,rhel7
 python-qpid
 python-routes
 python-sqlalchemy
diff --git a/files/rpms/swift b/files/rpms/swift
index 72253f7..bf29ea2 100644
--- a/files/rpms/swift
+++ b/files/rpms/swift
@@ -9,7 +9,7 @@
 python-greenlet
 python-netifaces
 python-nose
-python-paste-deploy # dist:f18,f19,f20,rhel7
+python-paste-deploy # dist:f19,f20,rhel7
 python-simplejson
 python-webob
 pyxattr