lsm: update program.load() to use new signature with &Btf

{{project-name}}/src/main.rs

@@ -19,7 +19,7 @@ use aya::programs::{CgroupSkb, CgroupSkbAttachType};
 {%- when "tracepoint" -%}
 use aya::programs::TracePoint;
 {%- when "lsm" -%}
-use aya::programs::Lsm;
+use aya::{programs::Lsm, Btf};
 {%- endcase %}
 use std::{
     convert::{TryFrom,TryInto},
@@ -94,8 +94,9 @@ fn try_main() -> Result<(), anyhow::Error> {
     program.load()?;
     program.attach("{{tracepoint_category}}", "{{tracepoint_name}}")?;
     {%- when "lsm" -%}
+    let btf = Btf::from_sys_fs()?;
     let program: &mut Lsm = bpf.program_mut("{{lsm_hook}}")?.try_into()?;
-    program.load("{{lsm_hook}}")?;
+    program.load("{{lsm_hook}}", &btf)?;
     program.attach()?;
     {%- endcase %}