azure_rm_common: use __version__ from module_util (#46184)

(cherry picked from commit 02c11e6b51)

changelogs/fragments/azure-version.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+- use proper module_util to get Ansible version for Azure requests

lib/ansible/module_utils/azure_rm_common.py

@@ -14,12 +14,9 @@ import json
 from os.path import expanduser
 
 from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.ansible_release import __version__ as ANSIBLE_VERSION
 from ansible.module_utils.six.moves import configparser
 import ansible.module_utils.six.moves.urllib.parse as urlparse
-try:
-    from ansible.release import __version__ as ANSIBLE_VERSION
-except ImportError:
-    ANSIBLE_VERSION = 'unknown'
 
 AZURE_COMMON_ARGS = dict(
     auth_source=dict(