Import building pipeline changes from Chat SDK #2

Job	Run time
build (android, 2020, NET_4_x, mono)	3m 51s
build (android, 2020, NET_4_x, il2cpp)	3m 52s
build (android, 2020, STANDARD_2_x, mono)	2m 43s
build (android, 2020, STANDARD_2_x, il2cpp)	3m 48s
build (android, 2021, NET_4_x, mono)	3m 41s
build (android, 2021, NET_4_x, il2cpp)	3m 8s
build (android, 2021, STANDARD_2_x, mono)	3m 41s
build (android, 2021, STANDARD_2_x, il2cpp)	3m 58s
build (ios, 2020, NET_4_x, mono)	2m 15s
build (ios, 2020, NET_4_x, il2cpp)	2m 21s
build (ios, 2020, STANDARD_2_x, mono)	2m 13s
build (ios, 2020, STANDARD_2_x, il2cpp)	2m 16s
build (ios, 2021, NET_4_x, mono)	2m 35s
build (ios, 2021, NET_4_x, il2cpp)	2m 31s
build (ios, 2021, STANDARD_2_x, mono)	2m 41s
build (ios, 2021, STANDARD_2_x, il2cpp)	2m 24s
	47m 58s

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