Revert "Raise minimum OpenStack SDK version to 0.99.0"

This reverts commit 4bfa135b20 [1] because
it broke TripleO [2] and possibly other users which were using code from
master branch with incompatible SDK releases. We will reapply this
safety check later once dust has settled.

Ref.:
[1] 4bfa135b20
[2] https://bugs.launchpad.net/tripleo/+bug/1975646

Change-Id: I637f1b7c1b792adf6d3d17a27ccb42179f56a83b

README.md

@@ -25,7 +25,7 @@ For using the Openstack Cloud collection firstly you need to install `ansible` a
 For example with pip:
 
 ```bash
-pip install "ansible>=2.9" "openstacksdk>=0.99.0"
+pip install "ansible>=2.9" "openstacksdk>=0.36"
 ```
 
 OpenStackSDK has to be available to Ansible and to the Python interpreter on the host, where Ansible executes the module (target host).

plugins/doc_fragments/openstack.py

@@ -91,7 +91,7 @@ options:
     type: str
 requirements:
   - python >= 3.6
-  - openstacksdk >= 0.99.0
+  - openstacksdk >= 0.36.0
 notes:
   - The standard OpenStack environment variables, such as C(OS_USERNAME)
     may be used instead of providing explicit values.

plugins/module_utils/openstack.py

@@ -67,7 +67,7 @@ OVERRIDES = {'os_client_config': 'config',
 
 CUSTOM_VAR_PARAMS = ['min_ver', 'max_ver']
 
-MINIMUM_SDK_VERSION = '0.99.0'
+MINIMUM_SDK_VERSION = '0.36.0'
 MAXIMUM_SDK_VERSION = None
 
 

requirements.txt

@@ -1 +1 @@
-openstacksdk>=0.99.0
+openstacksdk>=0.36