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/admin/datastore.rs

@@ -12,8 +12,8 @@ use hyper::{header, Body, Response, StatusCode};
 use serde_json::{json, Value};
 use tokio_stream::wrappers::ReceiverStream;
 
-use proxmox::{identity, sortable};
-use proxmox::tools::fs::{
+use proxmox_sys::{identity, sortable};
+use proxmox_sys::fs::{
     file_read_firstline, file_read_optional_string, replace_file, CreateOptions,
 };
 use proxmox_router::{