ci: reduce guest memory for virtio guest test case

In some configurations, the host system may not have
enough memory to support the guest. To address this,
try reducing the guest memory allocation from 4G to 2G.

Signed-off-by: Srujana Challa <schalla@marvell.com>
Change-Id: I00aaae29d781b58cfd4a5f88a5592f41afb7d15a
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/dataplane/dpu-offload/+/133780
Tested-by: Jerin Jacob <jerinj@marvell.com>
Reviewed-by: Rahul Bhansali <rbhansali@marvell.com>
Reviewed-by: Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>

ci/test/dao-test/common/ep_host_utils.sh

@@ -153,7 +153,7 @@ function ep_host_launch_guest()
 	tail -f $in | ($unbuffer $QEMU_BIN -hda "$VM_IMAGE" -name vm1  \
 	-netdev type=vhost-vdpa,vhostdev="/dev/vhost-vdpa-0",id=vhost-vdpa1 \
 	-device virtio-net-pci,netdev=vhost-vdpa1,disable-modern=off,page-per-vq=on,packed=on,mrg_rxbuf=on,mq=on,rss=on,rx_queue_size=1024,tx_queue_size=1024,disable-legacy=on -fsdev local,path=$EP_GUEST_SHARE_DIR,security_model=passthrough,id=hostshare -device virtio-9p-pci,id=fs0,fsdev=hostshare,mount_tag=host_tag \
-	-enable-kvm -nographic -m 4G -cpu host -smp 8 -L /usr/share/qemu &>$out) &
+	-enable-kvm -nographic -m 2G -cpu host -smp 8 -L /usr/share/qemu &>$out) &
 
 	# Wait for guest to be up
 	local itr=0