Clean up BOTMETA.yml (#44574)

This PR includes:
- Removal of maintainers that are listed as author in the module
- Removal of entries that do not extend the original author list
- Move ignored-statement to namespace/directory (where useful)
- In some cases, fix the authors-list or add missing github id

We end up with a list of exceptions/additions and a large set of
namespace/directory maintainers or team of maintainers.

Some entries could be further improved by discussing with some
maintainers.

lib/ansible/modules/cloud/misc/proxmox.py

@@ -145,7 +145,7 @@ options:
 notes:
   - Requires proxmoxer and requests modules on host. This modules can be installed with pip.
 requirements: [ "proxmoxer", "python >= 2.7", "requests" ]
-author: "Sergei Antipov @UnderGreen"
+author: Sergei Antipov (@UnderGreen)
 '''
 
 EXAMPLES = '''

lib/ansible/modules/cloud/misc/proxmox_template.py

@@ -78,7 +78,7 @@ options:
 notes:
   - Requires proxmoxer and requests modules on host. This modules can be installed with pip.
 requirements: [ "proxmoxer", "requests" ]
-author: "Sergei Antipov @UnderGreen"
+author: Sergei Antipov (@UnderGreen)
 '''
 
 EXAMPLES = '''

lib/ansible/modules/cloud/misc/rhevm.py

@@ -15,7 +15,7 @@ ANSIBLE_METADATA = {'metadata_version': '1.1',
 DOCUMENTATION = '''
 ---
 module: rhevm
-author: Timothy Vandenbrande
+author: Timothy Vandenbrande (@TimothyVandenbrande)
 short_description: RHEV/oVirt automation
 description:
     - This module only supports oVirt/RHEV version 3. A newer module M(ovirt_vms) supports oVirt/RHV version 4.

lib/ansible/modules/cloud/misc/serverless.py

@@ -71,7 +71,7 @@ options:
 notes:
    - Currently, the `serverless` command must be in the path of the node executing the task. In the future this may be a flag.
 requirements: [ "serverless", "yaml" ]
-author: "Ryan Scott Brown @ryansb"
+author: Ryan Scott Brown (@ryansb)
 '''
 
 EXAMPLES = """