runtime-rs: parse SEV-SNP related config file settings

The 'sev_snp_guest' default value of 'false' is in compliance with the
golang runtime behaviour.

Signed-off-by: Pavel Mores <pmores@redhat.com>

src/libs/kata-types/src/config/hypervisor/mod.rs

@@ -825,6 +825,14 @@ pub struct SecurityInfo {
     #[serde(default)]
     pub confidential_guest: bool,
 
+    /// If false prefer SEV even if SEV-SNP is also available
+    #[serde(default)]
+    pub sev_snp_guest: bool,
+
+    /// Path to SNP certificates
+    #[serde(default)]
+    pub snp_certs_path: String,
+
     /// Path to OCI hook binaries in the *guest rootfs*.
     ///
     /// This does not affect host-side hooks which must instead be added to the OCI spec passed to