test: shrink LUA_CPATH and {DY}LD_LIBRARY_PATH #354

Job	Run time
test-tarantool-integration / tarantool / build	5m 48s
test-tarantool-integration / memcached / run_tests	1m 7s
test-tarantool-integration / expirationd / run_tests	3m 0s
test-tarantool-integration / smtp / run_tests	12s
test-tarantool-integration / vshard / run_tests	6m 44s
test-tarantool-integration / avro-schema / run_tests	8s
test-tarantool-integration / checks / run_tests	58s
test-tarantool-integration / metrics / run_tests	1m 5s
test-tarantool-integration / mysql / run_tests	31s
test-tarantool-integration / php-client / run_tests	1m 11s
test-tarantool-integration / queue / run_tests	3m 6s
test-tarantool-integration / crud / run_tests	13m 36s
test-tarantool-integration / tarantool-c / run_tests	44s
test-tarantool-integration / ddl / run_tests	1m 14s
test-tarantool-integration / etcd-client / run_tests (v3.4.30)	4m 50s
test-tarantool-integration / go-tarantool / run_tests	2m 48s
test-tarantool-integration / etcd-client / run_tests (v3.5.12)	4m 52s
test-tarantool-integration / php-queue / run_tests	1m 34s
test-tarantool-integration / tarantool-python / run_tests	1m 21s
	54m 49s

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