Fixed: Tomcat access_log has 2 dots (OFBIZ-13089)

Between Tomcat 7 and Tomcat 8 the access_log default value of fileDateFormat
has changed:
https://tomcat.apache.org/tomcat-7.0-doc/config/valve.html#Access_Log_Valve/Attributes
https://tomcat.apache.org/tomcat-8.0-doc/config/valve.html#Access_Log_Valve/Attributes

I did not find any notice about that. We did not change OFBiz access-log-prefix value.
Not a big deal but better keep a simple file format with only one dot.

As we use the defaul format value we could also remove this OOTB value.
I believe it's better to keep it in order to allow users to decide about it.
Without this OOTB value they may miss this opportunity.
diff --git a/framework/catalina/ofbiz-component.xml b/framework/catalina/ofbiz-component.xml
index e776745..8c3568b 100644
--- a/framework/catalina/ofbiz-component.xml
+++ b/framework/catalina/ofbiz-component.xml
@@ -41,7 +41,7 @@
                 <property-value>%h %l %u %t "%r" %s %b "%{Referer}i" "%{User-Agent}i"</property-value>
             </property>
             <property name="access-log-rotate" value="true"/>
-            <property name="access-log-prefix" value="access_log."/>
+            <property name="access-log-prefix" value="access_log"/>
             <property name="access-log-dir" value="runtime/logs"/>
             <property name="access-log-maxDays" value="30"/>
             <!-- uncomment for cluster support
@@ -192,7 +192,7 @@
                 <property-value>%h %l %u %t "%r" %s %b "%{Referer}i" "%{User-Agent}i"</property-value>
             </property>
             <property name="access-log-rotate" value="true"/>
-            <property name="access-log-prefix" value="access_log."/>
+            <property name="access-log-prefix" value="access_log"/>
             <property name="access-log-dir" value="runtime/logs"/>
             <property name="access-log-maxDays" value="30"/>
             <property name="enable-request-dump" value="false"/>