Revert "testing with nftables branches for cluster setup"

This reverts commit cf1070f.

Author: Zj12248

scripts/setup/setup.cfg

@@ -1,7 +1,7 @@
 VHIVE_REPO='https://github.com/vhive-serverless/vhive'
-VHIVE_BRANCH='migrate-iptables-to-nftables'
+VHIVE_BRANCH='v1.8'
 LOADER_REPO='https://github.com/vhive-serverless/invitro'
-LOADER_BRANCH='migrate-iptables-to-nftables'
-CLUSTER_MODE='firecracker' # choose from {container, firecracker, firecracker_snapshots}
+LOADER_BRANCH='main'
+CLUSTER_MODE='container' # choose from {container, firecracker, firecracker_snapshots}
 PODS_PER_NODE=240
 DEPLOY_PROMETHEUS=false