qosmngr: make queue number assignment independent on interface name

Current qosmngr implementation was depending on interface name when calculating interface index in an internal array. This patch calculates indices based on interface's index in interface configuration.

gitlab-ci/install-dependencies.sh

@@ -16,6 +16,6 @@ cp easy.h event.h utils.h if_utils.h debug.h /usr/include/easy
 cp -a libeasy*.so* /usr/lib  
 cd ../libqos  
 make PLATFORM=TEST
-cp qos.h /usr/include  
+cp include/qos.h /usr/include
 cp -a libqos.so* /usr/lib  
 sudo ldconfig