Fix connection basic query arguments

[douglasfarinelli]

Description

Hi guys.

This patch correctly cast the from_url method for the parameters:

• max_connections
• max_idle_time
• idle_check_interval
• reader_read_size

When assembling a connection string with these parameters, it is not cast before passing it to the ConnectionPool class. Example:

import aredis

aredis.StrictRedis.from_url('redis://localhost:6379?max_connections=100&max_idle_time=5 ')

Out:

~/Documents/Projetos/crm/.venv/lib/python3.9/site-packages/aredis/pool.py in __init__(self, connection_class, max_connections, max_idle_time, idle_check_interval, **connection_kwargs)
    164         max_connections = max_connections or 2 ** 31
    165         if not isinstance(max_connections, int) or max_connections < 0:
--> 166             raise ValueError('"max_connections" must be a positive integer')
    167 
    168         self.connection_class = connection_class

ValueError: "max_connections" must be a positive integer