Misc fixes (#181)

* fix: handle process shutdown with limited permissions

Certain platforms like Android do not have permission to list all child
processes. In this instance, just continue

* remove dsa keys from test setup

DSA has been removed from openssh for some time now, and this causes
running tests on newer machines to fail

---------

Co-authored-by: David Murphy <[email protected]>

src/saltfactories/daemons/sshd.py

@@ -156,8 +156,6 @@ def _write_config(self):
                 config_lines.append(f"{key} {value}\n")
 
             # Let's generate the host keys
-            if platform.is_fips_enabled() is False:
-                self._generate_server_dsa_key()
             self._generate_server_ecdsa_key()
             self._generate_server_ed25519_key()
             for host_key in pathlib.Path(self.config_dir).glob("ssh_host_*_key"):
@@ -184,17 +182,6 @@ def _generate_client_ecdsa_key(self):
             key_path.chmod(0o0400)
         return key_path_prv
 
-    def _generate_server_dsa_key(self):
-        key_filename = "ssh_host_dsa_key"
-        key_path_prv = self.config_dir / key_filename
-        key_path_pub = self.config_dir / f"{key_filename}.pub"
-        if key_path_prv.exists() and key_path_pub.exists():
-            return key_path_prv
-        self._ssh_keygen(key_filename, "dsa", "1024")
-        for key_path in (key_path_prv, key_path_pub):
-            key_path.chmod(0o0400)
-        return key_path_prv
-
     def _generate_server_ecdsa_key(self):
         key_filename = "ssh_host_ecdsa_key"
         key_path_prv = self.config_dir / key_filename