[1.x] [BUGFIX] use asset plugin to copy images #3046

Job	Run time
Coding Standards	20s
Check architecture	15s
xml-lint	12s
Code Coverage / Code Coverage	5m 19s
Lint root / Lint yaml & Composer (8.2)	10s
Static analysis / Static Code Analysis (8.2)	1m 17s
Unit test / Supported Versions Matrix	3s
Unit test / Tests (8.1, lowest)	3m 44s
Unit test / Tests (8.1, locked)	2m 42s
Unit test / Tests (8.1, highest)	2m 59s
Unit test / Tests (8.2, lowest)	2m 55s
Unit test / Tests (8.2, locked)	2m 52s
Unit test / Tests (8.2, highest)	2m 46s
Unit test / Tests (8.3, lowest)	3m 29s
Unit test / Tests (8.3, locked)	2m 30s
Unit test / Tests (8.3, highest)	2m 40s
Functional test / Supported Versions Matrix	6s
integration test / Supported Versions Matrix	4s
integration test / Tests (8.1, lowest)	1m 6s
integration test / Tests (8.1, locked)	48s
integration test / Tests (8.1, highest)	51s
integration test / Tests (8.2, lowest)	1m 39s
integration test / Tests (8.2, locked)	46s
integration test / Tests (8.2, highest)	53s
integration test / Tests (8.3, lowest)	1m 2s
integration test / Tests (8.3, locked)	48s
integration test / Tests (8.3, highest)	51s
Functional test / Tests (8.1, lowest)	41s
Functional test / Tests (8.1, locked)	24s
Functional test / Tests (8.1, highest)	36s
Functional test / Tests (8.2, lowest)	41s
Functional test / Tests (8.2, locked)	22s
Functional test / Tests (8.2, highest)	44s
Functional test / Tests (8.3, lowest)	40s
Functional test / Tests (8.3, locked)	25s
Functional test / Tests (8.3, highest)	36s
	48m 16s

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