change variable names to uppercase for consistency

ansible/group_vars/all

@@ -34,11 +34,10 @@
     - /gpfs5
 
 #SSH Host Keys
-  s3_endpoint: ""
-  ssh_host_keys_s3_bucket: ""
-  ssh_host_keys_s3_object: ""
+  S3_ENDPOINT: ""
+  SSH_HOST_KEYS_S3_BUCKET: ""
+  SSH_HOST_KEYS_S3_OBJECT: ""
 
 # AWS credentials
-  lts_access_key: ""
-  lts_secret_key: ""
-
+  LTS_ACCESS_KEY: ""
+  LTS_SECRET_KEY: ""

ansible/roles/ssh_host_keys/tasks/main.yml

@@ -10,18 +10,18 @@
 - name: Download SSH host keys tar.gz from S3
   aws_s3:
     mode: get
-    s3_url: "{{ s3_endpoint }}"
-    bucket: "{{ ssh_host_keys_s3_bucket }}"
-    object: "{{ ssh_host_keys_s3_object }}"
-    dest: "/tmp/ssh_keys/{{ ssh_host_keys_s3_object }}"
-    aws_access_key: "{{ lts_access_key }}"
-    aws_secret_key: "{{ lts_secret_key }}"
+    s3_url: "{{ S3_ENDPOINT }}"
+    bucket: "{{ SSH_HOST_KEYS_S3_BUCKET }}"
+    object: "{{ SSH_HOST_KEYS_S3_OBJECT }}"
+    dest: "/tmp/ssh_keys/{{ SSH_HOST_KEYS_S3_OBJECT }}"
+    aws_access_key: "{{ LTS_ACCESS_KEY }}"
+    aws_secret_key: "{{ LTS_SECRET_KEY }}"
   vars:
     ansible_python_interpreter: /usr/bin/python3
 
 - name: Unpack SSH host keys to /etc/ssh
   unarchive:
-    src: "/tmp/ssh_keys/{{ ssh_host_keys_s3_object }}"
+    src: "/tmp/ssh_keys/{{ SSH_HOST_KEYS_S3_OBJECT }}"
     dest: "/etc/ssh"
     remote_src: yes
   become: true
@@ -30,4 +30,4 @@
   ansible.builtin.service:
     name: sshd
     state: restarted
-  become: true
+  become: true
\ No newline at end of file