vmm: seccomp: allow http-server to use sendto

Fixes: cloud-hypervisor#7449
Signed-off-by: Alyssa Ross <hi@alyssa.is>

Author: alyssais

vmm/src/seccomp_filters.rs

@@ -859,6 +859,7 @@ fn http_api_thread_rules() -> Result<Vec<(i64, Vec<SeccompRule>)>, BackendError>
         (libc::SYS_recvfrom, vec![]),
         (libc::SYS_recvmsg, vec![]),
         (libc::SYS_sched_yield, vec![]),
+        (libc::SYS_sendto, vec![]),
         (libc::SYS_sigaltstack, vec![]),
         (libc::SYS_write, vec![]),
         (libc::SYS_rt_sigprocmask, vec![]),