FS-7648 foundation for QA testing config

conf/testing/dialplan/default/0001_vmain.xml

@@ -0,0 +1,8 @@
+<extension name="vmain">
+  <condition field="destination_number" expression="^vmain$|^4000$|^\*98$">
+    <action application="answer"/>
+    <action application="sleep" data="1000"/>
+    <action application="voicemail" data="check default ${domain_name}"/>  
+  </condition>
+</extension>
+