Added retry support (#1616)

* Initial work on retries

* Added retry class and test coverage

* Added support for standalone and cluster

* Make TimeoutException instance of CommunicationException

* Added pipeline, trasnaction, replication support

* Fixed broken test

* Marked test as relay-incompatible

* Marked test as relay-incompatible

* Fixed analysis errors, added missing tests

* Codestyle fixes

* Fixed test

* Update README.md

* Update README.md

* Update README.md

* Updated README.md

* Refactor retry on read and write

* Added check for timeout value

* Updated README.md

* Fixed README.md

* Codestyle changes

* Added missing coverage

* Added missing test coverage

* Removed comments

* Added retry support for Relay connection (#1620)

* Added integration test case with mocked retry

* Changed client initialisation in tests

* Marked test as relay-incompatible

---------

Co-authored-by: Pavlo Yatsukhnenko <yatsukhnenko@users.noreply.github.com>

tests/PHPUnit/PredisConnectionTestCase.php

@@ -15,6 +15,7 @@ namespace Predis\Connection;
 use PHPUnit\Framework\MockObject\MockObject;
 use Predis\Command\CommandInterface;
 use Predis\Command\RawCommand;
+use Predis\TimeoutException;
 use PredisTestCase;
 
 /**
@@ -459,7 +460,7 @@ abstract class PredisConnectionTestCase extends PredisTestCase
      */
     public function testThrowsExceptionOnReadWriteTimeout(): void
     {
-        $this->expectException('Predis\Connection\ConnectionException');
+        $this->expectException(TimeoutException::class);
 
         $commands = $this->getCommandFactory();