##### 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

version_added: "2.5"
  installroot:
    description:
      - Specifies an alternative installroot, relative to which all packages
        will be installed.
    default: "/"
    type: str
    version_added: "2.3"
  security:
    description:
      - If set to C(yes), and C(state=latest) then only installs updates that have been marked security related.
    type: bool
    default: "no"
    version_added: "2.4"
  bugfix:
    description:
      - If set to C(yes), and C(state=latest) then only installs updates that have been marked bugfix related.
    default: "no"
    type: bool
    version_added: "2.6"
  allow_downgrade:
    description:
      - Specify if the named package and version is allowed to downgrade
        a maybe already installed higher version of that package.
        Note that setting allow_downgrade=True can make this module
        behave in a non-idempotent way. The task could end up with a set
        of packages that does not match the complete list of specified
        packages to install (because dependencies between the downgraded
        package and others can cause changes to the packages which were
        in the earlier transaction).