* Fix flushdb and flushall

Both commands should be broadcasted to all the shards.

* Support ssl_password on cluster

* linter fix

* change commands to run only on primary nodes

Co-authored-by: Chayim I. Kirshen <c@kirshen.com>
Co-authored-by: dvora-h <dvora.heller@redis.com>
(cherry picked from commit 045d5ed15305ccc44a0330e6f65f669998815598)

* add redis5 and redis4 dockers

* redis versions testenv

* path changes

* fix linters

* fix tests

* fixing linter

* Increased pubsub's wait_for_messages timeout to prevent flaky tests (#1893)

* Fixing TypeError in GraphCommands.explain (#1901)

* Fixing AttributeError in UnixDomainSocketConnection (#1903)

* Fixing AttributeError on some connection errors (#1905)

* cluster script fixes to support future cluster versions and redis unstable (#1900)

* Fixing LMOVE, BLMOVE returning an incorrect response (#1906)

* Raising ConnectionError on invalid ocsp certificates - with status information (#1907)

* 4.1.2 (#1904)

* adding cluster env timeout time (#1908)

* Update changes file with changes since 4.0.0-beta2 (#1915)

* Fixing volume for unstable_cluster docker (#1914)

* Change json.clear test multi to be up to date with redisjson (#1922)

* fix json clear test

* fix json clear test

* Add support for BZMPOP (#1851)

* add bzmpop

* add comment

* fix pr comment

* fix linters

* fix pr comments

* add client no-evict (#1856)

* Add support for ZINTERCARD (#1857)

* add zintercard

* fix pr comment

* linters

* Add support for EVAL_RO (#1862)

* add sort_ro

* mark test as onlynon cluster

* delete mark test as onlynoncluster

* add eval_ro

* fix linters

* delete sort_ro

* fix pr comment

* add type hints

* add type hints

* linters

* Add support for EVALSHA_RO (#1863)

* add evalsha-ro

* fix pr comment

* add type hints

* add type hints

* Fix naming conventions (#1872)

* fix naming convention

* fix worng changes

* change ports to resolve conflict with unstable_cluster

Co-authored-by: Chayim I. Kirshen <c@kirshen.com>
Co-authored-by: Chayim <chayim@users.noreply.github.com>
Co-authored-by: Bar Shaul <88437685+barshaul@users.noreply.github.com>
Co-authored-by: Varun Chopra <v@chopraaa.com>
(cherry picked from commit 0d26117625a0cebd8a73d510b51d71142a558c00)

* fix json clear test

* fix json clear test

(cherry picked from commit eaa88ce67f708d2dc1d5235526d03f41fc4cae7c)

(cherry picked from commit 8499adc46132638c4761c4885f13da8e96d0a944)

(cherry picked from commit 75fe6eb78b6e45100455adcc3b1df9fd033d5fda)