##### Summary
Document " <, >, <=, => " operators in name parameter of yum/dnf module. Currently the documentation does not mention that comparison operators are available, but they do work.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
yum/dnf module

##### ADDITIONAL INFORMATION
The value operators work currently in the yum/dnf modules
```
yum :
   name: "pkg >= 1"
   state: present
```

Yum/dnf will determine the version available and install it if it matches the comparison operator

behaviour.
  - 'Yum itself has two types of groups.  "Package groups" are specified in the
    rpm itself while "environment groups" are specified in a separate file
    (usually by the distribution).  Unfortunately, this division becomes
    apparent to ansible users because ansible needs to operate on the group
    of packages in a single transaction and yum requires groups to be specified
    in different ways when used in that way.  Package groups are specified as
    "@development-tools" and environment groups are "@^gnome-desktop-environment".
    Use the "yum group list hidden ids" command to see which category of group the group
    you want to install falls into.'
  - 'The yum module does not support clearing yum cache in an idempotent way, so it
    was decided not to implement it, the only method is to use command and call the yum
    command directly, namely "command: yum clean all"
    https://github.com/ansible/ansible/pull/31450#issuecomment-352889579'
# informational: requirements for nodes
requirements:
- yum
author:
    - Ansible Core Team
    - Seth Vidal (@skvidal)
    - Eduard Snesarev (@verm666)
    - Berend De Schouwer (@berenddeschouwer)
    - Abhijeet Kasurde (@Akasurde)
    - Adam Miller (@maxamillion)
'''
EXAMPLES = '''
- name: Install the latest version of Apache
  yum:
    name: httpd
    state: latest