update to proxmox-sys 0.2 crate

- imported pbs-api-types/src/common_regex.rs from old proxmox crate
- use hex crate to generate/parse hex digest
- remove all reference to proxmox crate (use proxmox-sys and
  proxmox-serde instead)

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>

src/tape/pool_writer/mod.rs

@@ -554,7 +554,7 @@ fn write_chunk_archive<'a>(
             Some(Err(err)) => bail!("{}", err),
         };
 
-        //println!("CHUNK {} size {}", proxmox::tools::digest_to_hex(digest), blob.raw_size());
+        //println!("CHUNK {} size {}", hex::encode(digest), blob.raw_size());
 
         match writer.try_write_chunk(&digest, &blob) {
             Ok(true) => {

src/tape/pool_writer/new_chunks_iterator.rs

@@ -58,7 +58,7 @@ impl NewChunksIterator {
                     };
 
                     let blob = datastore.load_chunk(&digest)?;
-                    //println!("LOAD CHUNK {}", proxmox::tools::digest_to_hex(&digest));
+                    //println!("LOAD CHUNK {}", hex::encode(&digest));
                     match tx.send(Ok(Some((digest, blob)))) {
                         Ok(()) => {},
                         Err(err) => {