Added qg-*, sg-* and vhu-* ports as default in included_interface_re.

By default router ports(qg-*), SG ports (sg-* VM SNAT traffic) and
VHU(vhost-user) ports for DPDK environment are enabled in
included_interface_re field in ovs.yaml.

Removed tap-* ports and qr-* ports to avoid data bloating.
If user still wants to configure the non default port they can
configure in ovs.yaml file and restart the monasca-gent to collect
the metrics.

Change-Id: Ie09ff86848bdec3e02d1ef8e0a50dc9e52fb0641

docs/Ovs.md

@@ -68,7 +68,7 @@ init_config:
   network_use_bits: true
   use_absolute_metrics: true
   ovs_cmd: 'sudo /usr/bin/ovs-vsctl' 
-  included_interface_re: tap.*|qr.*|qg.*
+  included_interface_re: qg.*|vhu.*|sg.*
   use_rate_metrics: true
   use_health_metrics: true