Adding Flex POD configuration

Change-Id: I4c2b225d9f652acb6b2799c6998f0afa363f3d3d
(cherry picked from commit 14a4406719b48cd248bc340ede0c8d5d90d1d0ab)
diff --git a/flex.yml b/flex.yml
new file mode 100644
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--- /dev/null
+++ b/flex.yml
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+# Deployment configuration for a physical hardware POD
+---
+
+# this is used to generate the genconfig/cord-inv file
+headnode:
+  ip: '10.118.126.11'
+  ansible_user: 'cord'
+  ansible_ssh_pass: 'cord'
+  ansible_ssh_port: 22
+
+common:
+  # set to the profile of cord you want to install
+  cord_profile: 'rcord'
+
+  # directories on the head node that the cord dir is copied to, and profile is created in
+  cord_dir: '/opt/cord'
+  cord_profile_dir: '/opt/cord_profile'
+
+  # all of these are written to genconfig/config.yml, and needs a rework
+
+  # Network address information for the head node:
+  #
+  # fabric_ip     - the IP address and mask bits to be used to configure the network
+  #                 interface connected to the leaf - spine fabric
+  #
+  # management_ip - the IP address and mask bits to be used to configure the network
+  #                 interface connecting the head node to the POD internal
+  #                 management network. The head node will deliver DHCP addresses to
+  #                 the other compute nodes over this interface
+  #
+  # external_ip   - the IP address and mask bits to be used to configure the network
+  #                 interface connecting the head node (and the POD) to the
+  #                 Internet. All traffic in the POD to external hosts will be
+  #                 NAT-ed through this interface
+  fabric_ip: '10.6.1.1/24'
+  management_ip: '10.6.0.1/24'
+  external_ip: '10.118.126.11/20'
+  external_iface: 'enp4s0f0'
+  external_gw: '10.118.112.1'
+  skipTags:
+
+passwords:
+  compute_node: "ubuntu"
+  maas_admin: "admin"
+  maas_user: "cord"
+
+docker:
+  imageVersion: candidate
+
+otherNodes:
+  # Experimental
+  #
+  # Specifies the subnet and address range that will be used to allocate IP addresses
+  # to the compute nodes as they are deployed into the POD.
+  fabric:
+    network: 10.6.1.1/24
+    range_low: 10.6.1.2
+    range_high: 10.6.1.253