Reconsider use of redis build tag

[AlexanderYastrebov]

With in the #1853 (comment) it was discovered that redis tag condition is not used properly and that redis-dependent tests were always executed.
This is not a bad thing to run as many tests as possible so maybe we should simply eliminate redis build tag altogether.

The idea behind the tag was to exclude tests that depend on the redis-server binary. The alternative could be to run all tests by default and introduce a make target to disable redis tests explicitly

[AlexanderYastrebov]

#1960 introduced testcontainers to run redis tests