refactor ansible code in to ansible-2.0 folder, and created space for ansible-2.10

ansible-2.0/roles/nginx/defaults/main.yml

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+---
+# defaults/main.yml
+# define default variable values here
+

ansible-2.0/roles/nginx/handlers/main.yml

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+---
+# handlers/main.yml
+# define handlers here
+
+#- name: restart <service>
+#  service: name=<service> state=restarted
+
+#- name: stop <service>
+#  service: name=<service> state=stopped
+
+- name: reload nginx
+  service: name=nginx state=reloaded

ansible-2.0/roles/nginx/meta/main.yml

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+---
+# meta/main.yml
+# define dependancies here
+
+# dependencies:
+  # - { role: geerlingguy.java }
+
+dependencies: []

ansible-2.0/roles/nginx/tasks/main.yml

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+---
+# tasks/main.yml
+# define tasks here
+
+- name: Install the nginx packages
+  apt: name={{ item }} state=present
+  with_items:
+   - nginx
+
+# - name: Ensure log directory exist
+  # file: path=/etc/nginx/sites-enabled state=directory mode=0644
+
+- name: Copy the nginx configuration file
+  template: src=nginx.conf.j2 dest=/etc/nginx/nginx.conf
+  notify:
+   - reload nginx

ansible-2.0/roles/nginx/templates/nginx.conf.j2

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+user root;
+worker_processes 8;
+worker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000;
+pid /var/run/nginx.pid;
+worker_rlimit_nofile 65535;
+
+events {
+    use epoll;
+    worker_connections 65535;
+}
+
+http {
+server_tokens off;
+    include       mime.types;
+    default_type  application/octet-stream;
+
+    log_format full '$remote_addr - $remote_user [$time_local] '
+            '"$request" $status $body_bytes_sent '
+            '"$http_referer" "$http_user_agent" "$http_x_forwarded_for" $request_time';
+
+
+    charset utf-8;
+
+    server_names_hash_bucket_size 128;
+    client_header_buffer_size 32k;
+    large_client_header_buffers 4 64k;
+    client_max_body_size 8m;
+
+    sendfile on;
+    tcp_nopush     on;
+    tcp_nodelay on;
+    keepalive_timeout 60;
+
+    open_file_cache max=65535 inactive=10s;
+    open_file_cache_valid 30s;
+    open_file_cache_min_uses 1;
+
+    gzip on;
+    gzip_min_length  1k;
+    gzip_buffers     4 16k;
+    gzip_http_version 1.0;
+    gzip_comp_level 2;
+    gzip_types       text/plain application/javascript text/css application/xml application/json;
+    gzip_vary on;
+
+
+    include /etc/nginx/conf.d/*.conf;
+    include /etc/nginx/sites-enabled/*;
+}

ansible-2.0/roles/nginx/vars/_extravars.yml

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+---
+# vars/_extravars.yml
+# define extra variable values here
+# this file should be loaded via an include_vars statement in the task.
+# often this is used for managing differences in os.
+
+# Variable setup.
+#- name: Include OS-Specific variables
+#  include_vars: "{{ ansible_os_family }}.yml"
+