WinRM/PSRP: Add support for unreachable

Currently PSRP connection always fail, even if the system is not
reachable. This PR fixes this.

lib/ansible/plugins/connection/psrp.py

@@ -166,6 +166,7 @@ from ansible.plugins.connection import ConnectionBase
 from ansible.plugins.shell.powershell import _common_args
 from ansible.utils.hashing import secure_hash
 from ansible.utils.path import makedirs_safe
+from requests.exceptions import ConnectTimeout
 
 HAS_PYPSRP = True
 PYPSRP_IMP_ERR = None
@@ -243,6 +244,12 @@ class Connection(ConnectionBase):
                     "psrp connection failure during runspace open: %s"
                     % to_native(e)
                 )
+            except ConnectTimeout as e:
+                raise AnsibleConnectionFailure(
+                    "Failed to connect to the host via PSRP: %s"
+                    % to_native(e)
+                )
+
             self._connected = True
         return self