crypto: add guards and adjust tests for BoringSSL #5818

Job	Run time
Build slim tarball	1m 59s
aarch64-linux: with shared libraries	19m 53s
aarch64-darwin: with shared libraries	22m 53s
x86_64-linux: with shared libraries	22m 37s
x86_64-darwin: with shared libraries	31m 1s
	1h 38m 23s

Provide feedback