Fixing skipped default override for CORS options

Some of the cores middleware options should have overridden default
values but the override method was not actually called so the library
defaults are still used.

Closes-Bug: #2051691
Change-Id: I8dac03c787bf729c60c2e0ecc9c03b7ba9a5b5a5

manila/cmd/api.py

@@ -48,6 +48,7 @@ def main():
     CONF(sys.argv[1:], project='manila',
          version=version.version_string())
     config.verify_share_protocols()
+    config.set_lib_defaults()
     log.setup(CONF, "manila")
     utils.monkey_patch()
 

manila/wsgi/wsgi.py

@@ -35,6 +35,7 @@ def initialize_application():
     gmr_opts.set_defaults(CONF)
     CONF(sys.argv[1:], project="manila", version=version.version_string())
     config.verify_share_protocols()
+    config.set_lib_defaults()
     log.setup(CONF, "manila")
 
     gmr.TextGuruMeditation.setup_autorun(version, conf=CONF)

releasenotes/notes/bug-2051691-cors-defaults-15989a221a9cb920.yaml

@@ -0,0 +1,9 @@
+---
+fixes:
+  - |
+    `bug 2051691 <https://bugs.launchpad.net/manila/+bug/2051691>`_: Fixed
+    the default values of the following options.
+
+    - ``[cors] allowed_headers``
+    - ``[cors] expose_headers``
+    - ``[cors] allow_methods``