[BUG] Performance issue with asyncio and validate_env

[sadsfae]

We have noticed that after 108 x hosts the following async method starts to fail:

async def validate_credentials(self):                                                                                                                            
        response = await self.get_request(self.root_uri + "/Systems")                                                                                                
                                                                                                                                                                     
        if response.status == 401:                                                                                                                                    
            logger.error(f"Failed to authenticate. Verify your credentials for {self.host}")                                                                          
            raise BadfishException                                                                                                                                    
                                                                                                                                                                     
        if response.status not in [200, 201]:                                                                                                                        
            logger.error(f"Failed to communicate with {self.host}")                                                                                                  
            raise BadfishException                      

[grafuls]

The issue that is raised from this is the following:
AresError('Failed to initialize c-ares channel')

[kambiz-aghaiepour]

We saw this again recently after new years for a schedule of 140 hosts.

[sadsfae]

Recently observed with a set of 138 x R640, previous approaches to adding session handling or other means to better scale c-ares here https://review.gerrithub.io/c/redhat-performance/quads/+/1224069