Add rand dependency test (#12566)

* Add rand dependency test

* nudge

programs/bpf/rust/rand/src/lib.rs

@@ -0,0 +1,18 @@
+//! @brief Example Rust-based BPF program that tests rand behavior
+
+#![allow(unreachable_code)]
+
+extern crate solana_sdk;
+use solana_sdk::{
+    account_info::AccountInfo, entrypoint, entrypoint::ProgramResult, info, pubkey::Pubkey,
+};
+
+entrypoint!(process_instruction);
+fn process_instruction(
+    _program_id: &Pubkey,
+    _accounts: &[AccountInfo],
+    _instruction_data: &[u8],
+) -> ProgramResult {
+    info!("rand");
+    Ok(())
+}