Update Shippable integration test groups. (#43118)

* Update Shippable integration test groups.
* Update integration test group aliases.
* Rebalance AWS and Azure tests with extra group.
* Rebalance Windows tests with another group.

test/utils/shippable/cloud.sh

@@ -5,13 +5,28 @@ set -o pipefail
 declare -a args
 IFS='/:' read -ra args <<< "$1"
 
-image="${args[1]}"
-python="${args[2]}"
-target="posix/ci/cloud/group${args[3]}/"
+cloud="${args[0]}"
+python="${args[1]}"
+group="${args[2]}"
+
+target="shippable/${cloud}/group${group}/"
 
 stage="${S:-prod}"
 
+if [ "${group}" == "1" ]; then
+    # only run smoketest tests for group1
+    changed_all_target="shippable/${cloud}/smoketest/"
+
+    if ! ansible-test integration "${changed_all_target}" --list-targets > /dev/null 2>&1; then
+        # no smoketest tests are available for this cloud
+        changed_all_target="none"
+    fi
+else
+    # smoketest tests already covered by group1
+    changed_all_target="none"
+fi
+
 # shellcheck disable=SC2086
 ansible-test integration --color -v --retry-on-error "${target}" ${COVERAGE:+"$COVERAGE"} ${CHANGED:+"$CHANGED"} ${UNSTABLE:+"$UNSTABLE"} \
     --remote-terminate always --remote-stage "${stage}" \
-    --docker "${image}" --python "${python}" --changed-all-target "${target}smoketest/"
+    --docker --python "${python}" --changed-all-target "${changed_all_target}"