Remove test settings from buildroot

pkg/provision/buildroot.go

@@ -109,7 +109,7 @@ Requires= minikube-automount.service docker.socket
 Type=notify
 
 # Automatically set options
-Environment=default-ulimit=nofile=99997:99997
+Environment=default-ulimit=nofile=1048576:1048576
 `
 	if noPivot {
 		log.Warn("Using fundamentally insecure --no-pivot option")
@@ -136,7 +136,7 @@ ExecReload=/bin/kill -s HUP $MAINPID
 
 # Having non-zero Limit*s causes performance problems due to accounting overhead
 # in the kernel. We recommend using cgroups to do container-local accounting.
-LimitNOFILE=1048576
+LimitNOFILE=infinity
 LimitNPROC=infinity
 LimitCORE=infinity