retryable error doesn't increment connection timeout number

[nunomaduro]

Looking at the retry specs, we see that:

When retrying, use the next host in your array.
When retrying because of a timeout, raise the timeouts like this:
number_of_tries * base_timeout
Example: Search (5s timeout) → Search timeout → Search (10s timeout) → Repeat.

At the moment, on the Python API Client we don't use yet the retry_count for this.

Goal:

1. Multiple timeouts by the number of tries on the line

   algoliasearch-client-python/algoliasearch/http/transporter.py

   Line 72 in 97a6f15

   request = Request(verb.upper(), request_options.headers, data,

   .

2. Add a test on it.

Implementation on C#: https://github.com/algolia/algoliasearch-client-csharp/blob/42ab1842f859df87482602b12d5cb714bfa8ec71/src/Algolia.Search/Transport/HttpTransport.cs#L118