ci: note why BDB is disabled for MSAN jobs

Author: fanquake

ci/test/00_setup_env_native_fuzz_with_msan.sh

@@ -14,6 +14,7 @@ export MSAN_AND_LIBCXX_FLAGS="${MSAN_FLAGS} ${LIBCXX_FLAGS}"
 
 export CONTAINER_NAME="ci_native_msan"
 export PACKAGES="clang-9 llvm-9 cmake"
+# BDB generates false-positives and will be removed in future
 export DEP_OPTS="NO_BDB=1 NO_QT=1 CC='clang' CXX='clang++' CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}' libevent_cflags='${MSAN_FLAGS}' sqlite_cflags='${MSAN_FLAGS}' zeromq_cxxflags='-std=c++17 ${MSAN_AND_LIBCXX_FLAGS}'"
 export GOAL="install"
 export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer,memory --with-asm=no --prefix=${DEPENDS_DIR}/x86_64-pc-linux-gnu/ CC=clang CXX=clang++ CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}'"

ci/test/00_setup_env_native_msan.sh

@@ -14,6 +14,7 @@ export MSAN_AND_LIBCXX_FLAGS="${MSAN_FLAGS} ${LIBCXX_FLAGS}"
 
 export CONTAINER_NAME="ci_native_msan"
 export PACKAGES="clang-9 llvm-9 cmake"
+# BDB generates false-positives and will be removed in future
 export DEP_OPTS="NO_BDB=1 NO_QT=1 CC='clang' CXX='clang++' CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}' libevent_cflags='${MSAN_FLAGS}' sqlite_cflags='${MSAN_FLAGS}' zeromq_cxxflags='-std=c++17 ${MSAN_AND_LIBCXX_FLAGS}'"
 export GOAL="install"
 export BITCOIN_CONFIG="--with-sanitizers=memory --with-asm=no --prefix=${DEPENDS_DIR}/x86_64-pc-linux-gnu/ CC=clang CXX=clang++ CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}'"