Introduce relative directories when installing Rust in e2e-tests and cliain build #4409

Job	Run time
Check PR title	4s
Build aleph-e2e-client image / Build aleph-e2e-client	23s
Build chain-bootstrapper / Build chain-bootstrapper (production=false)	1m 58s
Build test aleph-node / Build aleph-node (production=false)	1m 56s
Check excluded packages / Check excluded packages	1m 56s
Check production node and runtime / Check production node and runtime	1m 52s
Check code formatting / Run check, test and lints	30s
Unit tests and clippy / Run unit tests	1m 23s
Unit tests and clippy / Run static checks (clippy)	1m 29s
Check cliain build / Build or check cliain binary	7s
Check cliain build / Build and push cliain docker image to ecr	0s
Check runtime metadata	1s
Run e2e token transfer test	1s
Run e2e finalization test	1s
	11m 41s

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