Fix warnings (on Ansible 2.3)

Author: HanXHX

tasks/system.yml

@@ -7,13 +7,13 @@
   alternatives: name=awk path={{ dbs_alternative_awk }}
 
 - name: COPY | dotfiles for root
-  copy: src={{ item }} dest=/root/.{{ item }}
+  copy: src={{ item }} dest="/root/.{{ item }}"
   with_items:
-    - bashrc
-    - vimrc
-    - screenrc
-    - gitconfig
-  when: "{{ dbs_use_dotfiles }}"
+    - "bashrc"
+    - "vimrc"
+    - "screenrc"
+    - "gitconfig"
+  when: dbs_use_dotfiles
 
 - name: SYSCTL | Tuning
   sysctl: >