Boost: Add e2e tests to concatenate JS/CSS #77171

Job	Run time
Determine tests matrix	1m 4s
Determine tests matrix	1m 4s
E2E: Build jetpack-boost	3m 37s
E2E: Build jetpack-boost	3m 37s
E2E: Build jetpack-core	3m 48s
E2E: Build jetpack-core	3m 48s
Jetpack pre-connection e2e tests	3m 27s
Jetpack pre-connection e2e tests	3m 27s
Jetpack Boost - Base e2e tests	1m 12s
Jetpack Boost - Base e2e tests	6m 26s
Jetpack Boost - Modules e2e tests	7m 19s
Jetpack Boost - Modules e2e tests	7m 19s
Jetpack Boost - Critical CSS e2e tests	1m 15s
Jetpack Boost - Critical CSS e2e tests	4m 51s
Jetpack Boost - Concatenate JS/CSS e2e tests	3m 52s
Jetpack Boost - Concatenate JS/CSS e2e tests	3m 52s
Jetpack Boost - Image CDN e2e tests	4m 12s
Jetpack Boost - Image CDN e2e tests	4m 12s
Jetpack Boost - Image Guide e2e tests	3m 29s
Jetpack Boost - Image Guide e2e tests	3m 29s
Test report	3s
Test report	2s
Slack notification	1m 8s
Slack notification	59s
	1h 17m 32s

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