##### SUMMARY
cron contains call to Display.deprecated or AnsibleModule.deprecate and is scheduled for removal

```
lib/ansible/modules/cron.py:626:8: ansible-deprecated-version: Deprecated version ('2.12') found in call to Display.deprecated or AnsibleModule.deprecate (0%)
lib/ansible/modules/cron.py:631:8: ansible-deprecated-version: Deprecated version ('2.12') found in call to Display.deprecated or AnsibleModule.deprecate (0%)
```

##### ISSUE TYPE
 - Bug Report

##### COMPONENT NAME
```
lib/ansible/modules/cron.py
```

##### ANSIBLE VERSION
```
2.12
```

##### CONFIGURATION
N/A

##### OS / ENVIRONMENT
N/A

##### STEPS TO REPRODUCE
N/A

##### EXPECTED RESULTS
N/A

##### ACTUAL RESULTS
N/A

jobnames = []
        for l in self.lines:
            if re.match(r'%s' % self.ansible, l):
                jobnames.append(re.sub(r'%s' % self.ansible, '', l))
        return jobnames
    def get_envnames(self):
        envnames = []
        for l in self.lines:
            if re.match(r'^\S+=', l):
                envnames.append(l.split('=')[0])
        return envnames
    def _update_job(self, name, job, addlinesfunction):
        ansiblename = self.do_comment(name)
        newlines = []
        comment = None
        for l in self.lines:
            if comment is not None:
                addlinesfunction(newlines, comment, job)
                comment = None
            elif l == ansiblename:
                comment = l
            else:
                newlines.append(l)
        self.lines = newlines
        if len(newlines) == 0:
            return True
        else:
            return False  
    def _update_env(self, name, decl, addenvfunction):