Add missing variable file for Redhat

Change-Id: I89be92c55be9d892afc133d3a95a8227174d0b80
Signed-off-by: Nicolas Bock <nicolas.bock@suse.com>

meta/main.yml

@@ -30,6 +30,9 @@ galaxy_info:
     - name: opensuse
       versions:
         - 15
+    - name: EL
+      versions:
+      - 7
   categories:
     - cloud
     - baremetal

vars/redhat-7.yml

@@ -0,0 +1,44 @@
+---
+# Copyright 2019, SUSE
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cache_timeout: 600
+
+ironic_devel_distro_packages:
+  - git-core
+  - libffi-dev
+
+ironic_api_distro_packages:
+  - libxml2-dev
+
+ironic_conductor_distro_packages:
+  - libxml2-dev
+  - syslinux
+  - syslinux-common
+  - pxelinux
+  - libxslt1-dev
+  - qemu-utils
+  - libpq-dev
+  - python-yaml
+  - open-iscsi
+  - ipmitool
+  - tftpd-hpa
+
+ironic_conductor_standalone_distro_packages:
+  - isc-dhcp-server
+
+ironic_library_modules_paths:
+  - "/usr/lib/PXELINUX/pxelinux.0"
+  - "/usr/lib/syslinux/modules/efi64/chain.c32"
+  - "/usr/lib/syslinux/modules/bios/ldlinux.c32"