Make config parser case sensitivity in configure-verifier

Options in config file should be case sensitive, some projects
like octavia-tempest-plugin can't set some value as expected:
[load_balancer]
RBAC_test_type = owner_or_admin

Use `conf.optionxform = str` to prevent case transformation[1].

[1] https://docs.python.org/3/library/configparser.html

Change-Id: I34d85b835aaa7a3737577b75ec9e6f2b02f90ead
Closes-Bug: #1877930

CHANGELOG.rst

@@ -17,6 +17,17 @@ Changelog
 .. Release notes for existing releases are MUTABLE! If there is something that
    was missed or can be improved, feel free to change it!
 
+[unreleased]
+------------
+
+Fixed
+~~~~~
+
+* [verification component] Make config parser case sensitivity in
+  configure-verifier
+
+  `Launchpad-bug #1877930 <https://launchpad.net/bugs/1877930>`_
+
 [3.1.0] - 2020-05-08
 --------------------
 

rally/cli/commands/verify.py

@@ -333,6 +333,7 @@ class VerifyCommands(object):
             if extra_options:
                 if os.path.isfile(extra_options):
                     conf = configparser.ConfigParser()
+                    conf.optionxform = str
                     conf.read(extra_options)
                     extra_options = dict(conf._sections)
                     for s in extra_options:

rally/verification/utils.py

@@ -73,6 +73,7 @@ def create_dir(dir_path):
 
 def extend_configfile(extra_options, conf_path):
     conf_object = configparser.ConfigParser()
+    conf_object.optionxform = str
     conf_object.read(conf_path)
 
     conf_object = add_extra_options(extra_options, conf_object)
@@ -86,6 +87,7 @@ def extend_configfile(extra_options, conf_path):
 
 
 def add_extra_options(extra_options, conf_object):
+    conf_object.optionxform = str
     for section in extra_options:
         if section not in (conf_object.sections() + ["DEFAULT"]):
             conf_object.add_section(section)

tests/unit/verification/test_utils.py

@@ -80,11 +80,14 @@ class UtilsTestCase(test.TestCase):
     def test_add_extra_options(self):
         conf = configparser.ConfigParser()
         extra_options = {"section": {"foo": "bar"},
-                         "section2": {"option": "value"}}
+                         "section2": {"option": "value"},
+                         "section3": {"CamelCaseOption": "CamelCaseValue"}}
 
         conf = utils.add_extra_options(extra_options, conf)
 
-        expected = {"section": ("foo", "bar"), "section2": ("option", "value")}
+        expected = {"section": ("foo", "bar"),
+                    "section2": ("option", "value"),
+                    "section3": ("CamelCaseOption", "CamelCaseValue")}
         for section, option in expected.items():
             result = conf.items(section)
             self.assertIn(option, result)