roachtest/vecindex: create a nightly test for vector indexing

The new vector index roachtest doest too much work on the test runner.
To avoid flakiness, we're going to run this test on a separate test
runner until a more roachtest-friendly version of the test can be built.
These scripts implement that test.

Informs: #154590
Release note: None

Author: mw5h

build/teamcity/cockroach/nightlies/roachtest_nightly_gce_vecindex.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Copyright 2024 The Cockroach Authors.
+#
+# Use of this software is governed by the CockroachDB Software License
+# included in the /LICENSE file.
+
+
+set -exuo pipefail
+
+dir="$(dirname $(dirname $(dirname $(dirname "${0}"))))"
+
+source "$dir/teamcity-support.sh"  # For $root
+source "$dir/teamcity-bazel-support.sh"  # For run_bazel
+
+BAZEL_SUPPORT_EXTRA_DOCKER_ARGS="-e LITERAL_ARTIFACTS_DIR=$root/artifacts -e BUILD_VCS_NUMBER -e CLOUD -e COCKROACH_DEV_LICENSE -e TESTS -e COUNT -e GITHUB_API_TOKEN -e GITHUB_ORG -e GITHUB_REPO -e GOOGLE_EPHEMERAL_CREDENTIALS -e GOOGLE_KMS_KEY_A -e GOOGLE_KMS_KEY_B -e GOOGLE_CREDENTIALS_ASSUME_ROLE -e GOOGLE_SERVICE_ACCOUNT -e SLACK_TOKEN -e TC_BUILDTYPE_ID -e TC_BUILD_BRANCH -e TC_BUILD_ID -e TC_SERVER_URL -e SELECT_PROBABILITY -e COCKROACH_RANDOM_SEED -e ROACHTEST_ASSERTIONS_ENABLED_SEED -e ROACHTEST_FORCE_RUN_INVALID_RELEASE_BRANCH -e GRAFANA_SERVICE_ACCOUNT_JSON -e GRAFANA_SERVICE_ACCOUNT_AUDIENCE -e USE_SPOT -e SNOWFLAKE_USER -e SNOWFLAKE_PVT_KEY -e COCKROACH_EA_PROBABILITY" \
+			       run_bazel build/teamcity/cockroach/nightlies/vecindex_nightly_impl.sh

build/teamcity/cockroach/nightlies/vecindex_nightly_impl.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+# Copyright 2024 The Cockroach Authors.
+#
+# Use of this software is governed by the CockroachDB Software License
+# included in the /LICENSE file.
+
+set -exuo pipefail
+
+dir="$(dirname $(dirname $(dirname $(dirname "${0}"))))"
+set -a
+source "$dir/teamcity-support.sh"
+set +a
+
+if [[ ! -f ~/.ssh/id_rsa.pub ]]; then
+  ssh-keygen -q -C "roachtest-nightly-bazel $(date)" -N "" -f ~/.ssh/id_rsa
+fi
+
+source $root/build/teamcity/util/roachtest_util.sh
+
+artifacts=/artifacts
+
+arch=amd64
+$root/build/teamcity/cockroach/nightlies/roachtest_compile_bits.sh $arch
+
+build/teamcity-roachtest-invoke.sh \
+  --suite vecindex \
+  --cloud "gce" \
+  --cluster-id "${TC_BUILD_ID}" \
+  --artifacts=/artifacts \
+  --artifacts-literal="${LITERAL_ARTIFACTS_DIR:-}" \
+  --parallelism="${PARALLELISM}" \
+  --cpu-quota="${CPUQUOTA}" \
+  --use-spot="${USE_SPOT:-auto}" \
+  --slack-token="${SLACK_TOKEN}" \