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/Predis/Transaction/Strategy/ReplicationConnectionStrategyTest.php

@@ -14,6 +14,7 @@ namespace Predis\Transaction\Strategy;
 
 use PHPUnit\Framework\TestCase;
 use Predis\Command\CommandInterface;
+use Predis\Connection\Parameters;
 use Predis\Connection\Replication\ReplicationInterface;
 use Predis\Transaction\MultiExecState;
 
@@ -46,6 +47,11 @@ class ReplicationConnectionStrategyTest extends TestCase
             ->with($this->mockCommand)
             ->willReturn('OK');
 
+        $this->mockConnection
+            ->expects($this->any())
+            ->method('getParameters')
+            ->willReturn(new Parameters());
+
         $strategy = new ReplicationConnectionStrategy($this->mockConnection, new MultiExecState());
 
         $this->assertEquals('OK', $strategy->executeCommand($this->mockCommand));