Move set_facts to kubespray-defaults defaults

These facts can be generated in defaults with a performance
boost.

Also cleaned up duplicate etcd var names.

roles/etcd/tasks/install_docker.yml

@@ -2,7 +2,7 @@
 - name: Install | Copy etcdctl binary from docker container
   command: sh -c "{{ docker_bin_dir }}/docker rm -f etcdctl-binarycopy;
            {{ docker_bin_dir }}/docker create --name etcdctl-binarycopy {{ etcd_image_repo }}:{{ etcd_image_tag }} &&
-           {{ docker_bin_dir }}/docker cp etcdctl-binarycopy:{{ etcd_container_bin_dir }}etcdctl {{ bin_dir }}/etcdctl &&
+           {{ docker_bin_dir }}/docker cp etcdctl-binarycopy:/usr/local/bin/etcdctl {{ bin_dir }}/etcdctl &&
            {{ docker_bin_dir }}/docker rm -f etcdctl-binarycopy"
   when: etcd_deployment_type == "docker"
   register: etcd_task_result

roles/etcd/tasks/install_rkt.yml

@@ -18,7 +18,7 @@
     --mount=volume=bin-dir,target=/host/bin
     {{ etcd_image_repo }}:{{ etcd_image_tag }}
     --name=etcdctl-binarycopy
-    --exec=/bin/cp -- {{ etcd_container_bin_dir }}/etcdctl /host/bin/etcdctl
+    --exec=/bin/cp -- /usr/local/bin/etcdctl /host/bin/etcdctl
   register: etcd_task_result
   until: etcd_task_result.rc == 0
   retries: 4

roles/etcd/templates/etcd.j2

@@ -17,7 +17,5 @@
   {% endif %}
   --name={{ etcd_member_name | default("etcd") }} \
   {{ etcd_image_repo }}:{{ etcd_image_tag }} \
-  {% if etcd_after_v3 %}
-  {{ etcd_container_bin_dir }}etcd \
-  {% endif %}
+  /usr/local/bin/etcd \
   "$@"