Parse required_floatingips parameter as a JSON array

An API request to create a floating IP reservation is expected to pass
the required_floatingips parameter as a list, not as a string. Modify
the CLI to parse required_floatingips as a JSON array so it can be
passed to the API in the right format.

Change-Id: Ia84ceb881f0889266c8f0349a1ffb047597bac2d
Closes-Bug: #1843258

blazarclient/v1/shell_commands/leases.py

@@ -18,6 +18,7 @@ import datetime
 import logging
 import re
 
+from oslo_serialization import jsonutils
 from oslo_utils import strutils
 
 from blazarclient import command
@@ -172,6 +173,8 @@ class CreateLease(command.CreateCommand):
                 else:
                     if strutils.is_int_like(v):
                         request_params[k] = int(v)
+                    elif isinstance(defaults[k], list):
+                        request_params[k] = jsonutils.loads(v)
                     else:
                         request_params[k] = v
 

releasenotes/notes/parse-required-floatingips-f79f79d652e371ae.yaml

@@ -0,0 +1,10 @@
+---
+fixes:
+  - |
+    Parse the ``required_floatingips`` command-line parameter as a list instead
+    of a string, to pass it to the API in the expected format. For example,
+    this parameter can be used in the following fashion:
+
+    ``blazar lease-create --reservation 'resource_type=virtual:floatingip,network_id=81fabec7-00ae-497a-b485-72f4bf187d3e,amount=2,required_floatingips=["172.24.4.2","172.24.4.3"]' fip-lease``
+
+    For more details, see `bug 1843258 <https://launchpad.net/bugs/1843258>`_.