Ansible TR: Corrections to access.log archives file pattern (#6519)

* Use date format yyyy-MM-dd

* Pad integer counter with '0'

(cherry picked from commit 31beba5)

infrastructure/ansible/roles/traffic-router/defaults/main.yml

@@ -139,7 +139,7 @@ tr_log4j2_opts: |
           </Console>
           <RollingFile name="traffic_router_access"
                        fileName="{{tr_log_dir}}/access.log"
-                       filePattern="{{tr_log_dir}}/access.log.%d{MM-dd-yyyy}-%2i" >
+                       filePattern="{{tr_log_dir}}/access.log.%d{yyyy-MM-dd}-%02i" >
               <PatternLayout pattern="%m%n" />
               <Policies>
                   <SizeBasedTriggeringPolicy size="200MB" />