cephadm:expose gather-facts orch api

Fixes: https://tracker.ceph.com/issues/51209

This PR intends to expose host metadata(gather-facts) orch api

Signed-off-by: Avan Thakkar <athakkar@redhat.com>
Signed-off-by: Aashish Sharma <aasharma@redhat.com>

src/pybind/mgr/cephadm/inventory.py

@@ -33,7 +33,6 @@ class Inventory:
     def __init__(self, mgr: 'CephadmOrchestrator'):
         self.mgr = mgr
         adjusted_addrs = False
-        self.facts = {}   # type: Dict[str, Dict[str, Any]]
 
         def is_valid_ip(ip: str) -> bool:
             try:
@@ -92,13 +91,8 @@ def assert_host(self, host: str) -> None:
         if host not in self._inventory:
             raise OrchestratorError('host %s does not exist' % host)
 
-    def get_facts(self, host: str) -> Dict[str, Any]:
-        return self.facts.get(host, {})
-
     def add_host(self, spec: HostSpec) -> None:
         self._inventory[spec.hostname] = spec.to_json()
-        host_facts = self.get_facts(spec.hostname)
-        self._inventory['host_facts'] = host_facts
         self.save()
 
     def rm_host(self, host: str) -> None: