Reduce Fabrics memory consumption; provisions for UpdateNOC (#208) #490

Job	Run time
build_and_test (rustcrypto)	4m 40s
build_and_test (rustcrypto, alloc)	4m 47s
build_and_test (rustcrypto, os)	6m 55s
build_and_test (mbedtls)	5m 0s
build_and_test (mbedtls, alloc)	4m 57s
build_and_test (mbedtls, os)	7m 43s
build_and_test (openssl)	4m 34s
build_and_test (openssl, alloc)	4m 28s
build_and_test (openssl, os)	6m 32s
	49m 36s

Provide feedback