[backport/2.2] Fix for common non-ASCII characters in CRDs (#334)

Co-authored-by: Alessandro Rossi <4215912+kubealex@users.noreply.github.com>

changelogs/fragments/308-fix-for-common-non-ascii-characters-in-resources.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - module_utils.common - change default opening mode to read-bytes to avoid bad interpretation of non ascii characters and strings, often present in 3rd party manifests.

plugins/module_utils/common.py

@@ -331,7 +331,7 @@ class K8sAnsibleMixin(object):
         if not os.path.exists(path):
             self.fail(msg="Error accessing {0}. Does the file exist?".format(path))
         try:
-            with open(path, 'r') as f:
+            with open(path, "rb") as f:
                 result = list(yaml.safe_load_all(f))
         except (IOError, yaml.YAMLError) as exc:
             self.fail(msg="Error loading resource_definition: {0}".format(exc))