Fix regex for SSH keys

Comments on SSH public keys can contain spaces. With this change the
the workload generator will no longer choke on such keys.

Signed-off-by: Max Harmathy <max.harmathy@uhurutec.com>

Author: harmathy

src/openstack_workload_generator/entities/helpers.py

@@ -175,7 +175,7 @@ def get_project_ipv4_subnet() -> str:
 
     @staticmethod
     def get_admin_vm_ssh_key() -> str:
-        return Config.get("admin_vm_ssh_key", r"ssh-\S+\s\S+\s\S+", multi_line=True)
+        return Config.get("admin_vm_ssh_key", r"ssh-\S+\s\S+(\s\S+)+", multi_line=True)
 
     @staticmethod
     def get_admin_domain_password() -> str: