Merge #18864: Add v0.16.3 backwards compatibility test, bump v0.19.0.1 to v0.19.1

d135c29476 [ci] make list of previous releases to download a setting (Sjors Provoost)
9c246b873c [test] backwards compatibility: bump v0.19.0.1 to v0.19.1 (Sjors Provoost)
89a28e02fa [test] add v0.16.3 backwards compatibility test (Sjors Provoost)

Pull request description:

  Thanks to #18774's `adjust_bitcoin_conf_for_pre_17` we can now test backwards compatibility for v0.16.3, both for sync and loading a recent wallet.

  This PR bumps v0.19.0.1 to v0.19.1.

  I also made the version list consistent for the `contrib/devtools/previous_release.sh` instruction, between both tests.

ACKs for top commit:
  MarcoFalke:
    ACK d135c29476

Tree-SHA512: 5ff137a7a934237fa220f1c2807ce9abeeb75929266558bf3e4045bec7dfcd0a8747fa74d700065c568330b18badf58c60c308eb13d1eed444d4bbfe6decc48b

ci/test/00_setup_env_native_qt5.sh

@@ -14,4 +14,5 @@ export RUN_UNIT_TESTS_SEQUENTIAL="true"
 export RUN_UNIT_TESTS="false"
 export GOAL="install"
 export TEST_PREVIOUS_RELEASES=true
+export PREVIOUS_RELEASES_TO_DOWNLOAD="v0.15.2 v0.16.3 v0.17.1 v0.18.1 v0.19.1"
 export BITCOIN_CONFIG="--enable-zmq --with-gui=qt5 --enable-glibc-back-compat --enable-reduce-exports --enable-c++17 --enable-debug CFLAGS=\"-g0 -O2 -funsigned-char\" CXXFLAGS=\"-g0 -O2 -funsigned-char\""

ci/test/05_before_script.sh

@@ -35,8 +35,8 @@ if [ -z "$NO_DEPENDS" ]; then
   fi
   DOCKER_EXEC $SHELL_OPTS make $MAKEJOBS -C depends HOST=$HOST $DEP_OPTS
 fi
-if [ "$TEST_PREVIOUS_RELEASES" = "true" ]; then
+if [ -n "$PREVIOUS_RELEASES_TO_DOWNLOAD" ]; then
   BEGIN_FOLD previous-versions
-  DOCKER_EXEC contrib/devtools/previous_release.sh -b -t "$PREVIOUS_RELEASES_DIR" v0.15.2 v0.16.3 v0.17.1 v0.18.1 v0.19.0.1
+  DOCKER_EXEC contrib/devtools/previous_release.sh -b -t "$PREVIOUS_RELEASES_DIR" "${PREVIOUS_RELEASES_TO_DOWNLOAD}"
   END_FOLD
 fi