ssh pub/pri key pair creation is not needed so commented out.

porch/api/machine/bizlogic.py

@@ -165,6 +165,7 @@ def provision_machine(name):
             return (False, s_msg)
 
     # Create ssh private/public keys
+    """
     key = rsa.generate_private_key(backend=default_backend(), \
             public_exponent=65537, key_size=2048)
     pubkey = key.public_key().public_bytes(serialization.Encoding.OpenSSH, \
@@ -194,6 +195,7 @@ def provision_machine(name):
     except:
         s_msg = 'Fail to create ssh public key.'
         return (False, s_msg)
+    """
 
     # Create fai config tar file on TFTP_FAI_DIR
     # copy base tar file to d['name'].tar
@@ -207,7 +209,7 @@ def provision_machine(name):
 
     # add pubkeys/<ip> into tarfile.
     with tarfile.open(s_dst, 'a') as o_tar:
-        o_tar.add(s_pubkey_file, arcname='pubkeys/{}'.format(d['ip']))
+        # o_tar.add(s_pubkey_file, arcname='pubkeys/{}'.format(d['ip']))
         if svc_iface_file:
             o_tar.add(svc_iface_file, arcname='svc-interface')