qos_policy_name_from_kind() should accept either a QoSPolicyKind or an int

[ivanpauno]

Fix error introduced in #634.

qos_policy_name_from_kind() was previously accepting either QoSPolicyKind or an int (which wasn't properly documented in the type annotation).
The changes introduced on that function only accepted a QoSPolicyKind, this patch reintroduce int support.

Here

rclpy/rclpy/rclpy/qos_event.py

Line 251 in 0a3a2bf

policy_name = qos_policy_name_from_kind(event.last_policy_kind)

event.last_policy_kind is an int.

The error wasn't caught because fastrtps doesn't support the feature, but it the following nightlies were failing:

• http://build.ros2.org/view/Rci/job/Rci__nightly-cyclonedds_ubuntu_focal_amd64/
• http://build.ros2.org/view/Rci/job/Rci__nightly-connext_ubuntu_focal_amd64/

[ivanpauno]

@ros-pull-request-builder retest this please

[ivanpauno]

CI, testing rclpy and ros2topic with only rmw_cyclonedds available:

• Linux
• Linux-aarch64
• macOS
• Windows

[jacobperron]

The change looks okay, but not sure about the test failure.

[ivanpauno]

• Linux

[ivanpauno]

The change looks okay, but not sure about the test failure.

Another failure introduced in #634 that wasn't caught because of only running tests with fastrtps.