Merge branch '2.3' of ezsystems/ezplatform-http-cache into 4.6 #211

# to view logs

Job	Run time
Run code style check (8.0)	2m 32s
Tests (7.4)	2m 32s
Tests (8.0)	15s
Tests (8.1, --ignore-platform-req php)	2m 34s
REST integration tests / functional-tests-rest	13m 24s
	21m 17s

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