esys: Use default OpenSSL context for session HMAC operations #1771

Job	Run time
scanbuild	6m 17s
coverity-test	0s
build-test (ubuntu-18.04, gcc)	4m 30s
build-test (ubuntu-18.04, clang)	4m 30s
test-coverage	5m 3s
build-test (ubuntu-20.04, gcc)	4m 29s
test-fuzz	2m 33s
test-mbedtls (ubuntu-20.04)	2m 50s
build-test (ubuntu-20.04, clang)	4m 29s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	2m 53s
build-test (fedora-32, gcc)	4m 30s
test-no-crypto-build	1m 18s
test-tcti-config	14m 1s
build-test (fedora-32, clang)	4m 28s
build-test (opensuse-leap, gcc)	4m 30s
build-test (opensuse-leap, clang)	4m 29s
build-test (ubuntu-22.04, gcc)	4m 30s
build-test (ubuntu-22.04, clang)	4m 28s
build-test (alpine-3.15, gcc)	4m 14s
build-test (alpine-3.15, clang)	4m 31s
	1h 28m 33s

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