Add tools and libraries team to trello

[ChristineTChen]

What does this PR do?

Add team to trello QA board

Motivation

Additional Notes

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• PR title must be written as a CHANGELOG entry (see why)
• Files changes must correspond to the primary purpose of the PR as described in the title (small unrelated changes should have their own PR)
• PR must have changelog/ and integration/ labels attached

[codecov]

Codecov Report

Merging #6968 into master will decrease coverage by 5.77%.
The diff coverage is n/a.

Impacted Files	Coverage Δ
couch/datadog_checks/couch/__init__.py
tcp_check/datadog_checks/tcp_check/tcp_check.py
clickhouse/datadog_checks/clickhouse/__init__.py
...os_slave/datadog_checks/mesos_slave/mesos_slave.py
..._checks_base/datadog_checks/base/utils/platform.py
consul/tests/test_integration.py
hivemq/datadog_checks/hivemq/__about__.py
datadog_checks_base/tests/test_prometheus.py
istio/tests/common.py
lighttpd/tests/common.py
... and 843 more