DCD-224: Add fetching of EC2 metadata and generation of EFS mount from it.

roles/aws_efs_config/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+efs_target: "{{ ansible_ec2_placement_availability_zone }}.{{ atl_efs_id }}.efs.{{ ansible_ec2_placement_region }}.amazonaws.com"

roles/aws_efs_config/meta/main.yml

@@ -0,0 +1,3 @@
+---
+dependencies:
+  - aws_metadata

roles/aws_efs_config/tasks/main.yml

@@ -0,0 +1,13 @@
+---
+
+- name: Enable mountpoint in fstab
+  # lineinfile:
+  #   path: "/etc/fstab"
+  #   line: "{{ efs_target }}:/ /media/atl nfs4 rw,vers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2 0 0"
+  # notify: mount_all
+  mount:
+    path: "{{ atl_shared_mountpoint }}"
+    src: "{{ efs_target }}:/"
+    fstype: nfs4
+    opts: "rw,vers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2"
+    state: mounted