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/api2/access/acl.rs

@@ -1,6 +1,7 @@
 //! Manage Access Control Lists
 
 use anyhow::{bail, Error};
+use hex::FromHex;
 
 use proxmox_router::{Router, RpcEnvironment, Permission};
 use proxmox_schema::api;
@@ -126,7 +127,7 @@ pub fn read_acl(
         extract_acl_node_data(&tree.root, "", &mut list, exact, &auth_id_filter);
     }
 
-    rpcenv["digest"] = proxmox::tools::digest_to_hex(&digest).into();
+    rpcenv["digest"] = hex::encode(&digest).into();
 
     Ok(list)
 }
@@ -210,7 +211,7 @@ pub fn update_acl(
     let (mut tree, expected_digest) = pbs_config::acl::config()?;
 
     if let Some(ref digest) = digest {
-        let digest = proxmox::tools::hex_to_digest(digest)?;
+        let digest = <[u8; 32]>::from_hex(digest)?;
         crate::tools::detect_modified_configuration_file(&digest, &expected_digest)?;
     }