image-rs: replace rand from openssl to ring

openssl does not support cross compilation while ring supports, this
makes sense when we do cross compilation tests.

Signed-off-by: Xynnn007 <xynnn@linux.alibaba.com>

image-rs/Cargo.toml

@@ -63,7 +63,7 @@ ttrpc-codegen = { workspace = true, optional = true }
 cfg-if.workspace = true
 filetime = "0.2"
 nix = "0.26"
-openssl.workspace = true
+ring.workspace = true
 rstest.workspace = true
 serial_test = "2.0.0"
 strum.workspace = true

image-rs/src/stream.rs

@@ -120,15 +120,15 @@ async fn channel_processing(
 #[cfg(test)]
 mod tests {
     use super::*;
-    use openssl::rand::rand_bytes;
+    use ring::rand::SecureRandom;
     use std::fs::File;
     use std::io::BufReader;
     use tar::{Builder, Header};
 
     #[tokio::test]
     async fn test_channel_processing() {
         let mut data = [0; 100000];
-        rand_bytes(&mut data).unwrap();
+        ring::rand::SystemRandom::new().fill(&mut data[..]).unwrap();
         let data_digest = sha2::Sha256::digest(data.as_slice());
 
         let mut ar = Builder::new(Vec::new());
@@ -169,7 +169,7 @@ mod tests {
     #[tokio::test]
     async fn test_stream_processing() {
         let mut data = [0; 100000];
-        rand_bytes(&mut data).unwrap();
+        ring::rand::SystemRandom::new().fill(&mut data[..]).unwrap();
 
         let mut ar = Builder::new(Vec::new());
         let mut header = Header::new_gnu();