chore: Move SEV host functionality to submodule in order to separate host and guest (#6111)

Author: frankdavid

rs/ic_os/config/src/hostos/guestos_config.rs

@@ -5,7 +5,7 @@ use config_types::{
 };
 use deterministic_ips::node_type::NodeType;
 use deterministic_ips::{calculate_deterministic_mac, IpVariant, MacAddr6Ext};
-use ic_sev::HostSevCertificateProvider;
+use ic_sev::host::HostSevCertificateProvider;
 use std::net::Ipv6Addr;
 use utils::to_cidr;
 
@@ -100,7 +100,7 @@ mod tests {
         DeploymentEnvironment, DeterministicIpv6Config, HostOSConfig, ICOSSettings, Ipv6Config,
         NetworkSettings,
     };
-    use ic_sev::testing::mock_host_sev_certificate_provider;
+    use ic_sev::host::testing::mock_host_sev_certificate_provider;
     use std::net::Ipv6Addr;
 
     fn hostos_config_for_test() -> HostOSConfig {

rs/ic_os/os_tools/guest_vm_runner/src/guest_vm_config.rs

@@ -6,7 +6,7 @@ use config::hostos::guestos_config::generate_guestos_config;
 use config_types::{GuestOSConfig, HostOSConfig};
 use deterministic_ips::node_type::NodeType;
 use deterministic_ips::{calculate_deterministic_mac, IpVariant};
-use ic_sev::HostSevCertificateProvider;
+use ic_sev::host::HostSevCertificateProvider;
 use std::path::{Path, PathBuf};
 
 // See build.rs

rs/ic_os/os_tools/guest_vm_runner/src/main.rs

@@ -12,7 +12,7 @@ use deterministic_ips::{calculate_deterministic_mac, IpVariant, MacAddr6Ext};
 use ic_device::device_mapping::MappedDevice;
 use ic_device::mount::{GptPartitionProvider, PartitionProvider};
 use ic_metrics_tool::{Metric, MetricsWriter};
-use ic_sev::HostSevCertificateProvider;
+use ic_sev::host::HostSevCertificateProvider;
 use nix::unistd::getuid;
 use std::fmt::{Debug, Formatter};
 use std::io::Write;
@@ -605,7 +605,7 @@ mod tests {
     };
     use ic_device::mount::testing::ExtractingFilesystemMounter;
     use ic_device::mount::GptPartitionProvider;
-    use ic_sev::testing::mock_host_sev_certificate_provider;
+    use ic_sev::host::testing::mock_host_sev_certificate_provider;
     use nix::sys::signal::SIGTERM;
     use regex::Regex;
     use std::fs::File;