Copy SSH Key with copy rather than template module

Doing so adds support for copying encrypted keys files directly. 

This was added to ansible in 2.1 to the copy command but seemingly not to template.

tasks/update-code/git.yml

@@ -1,6 +1,6 @@
 ---
 - name: ANSISTRANO | GIT | Ensure GIT deployment key is up to date
-  template:
+  copy:
     src: "{{ ansistrano_git_identity_key_path }}"
     dest: "{{ ansistrano_deploy_to }}/git_identity_key"
     mode: 0400