Improve fingerprint command to also read attribute values

[cdjackson]

This improves the fingerprint console command to also read the attribute values from the device. If the device responds to the attributes supported request, then it will read the attribute values. If not, it will request all known attributes for the cluster and print any that receive a response.

Attribute data will only be read from the device if it was not received in the past 60 seconds.

| | | | |>| Attributes Supported
| | | | | |> 0000  Scene Count                               >> 0
| | | | | |> 0001  Current Scene                             >> 0
| | | | | |> 0002  Current Group                             >> 0
| | | | | |> 0003  Scene Valid                               >> false
| | | | | |> 0004  Name Support                              >> 0
| | | | | |> FFFD  Cluster Revision                          >> 2

Signed-off-by: Chris Jackson chris@cd-jackson.com

[lgtm-com[bot]]

This pull request introduces 1 alert when merging 2de57157577b6866eafab0281d4a12c44e8ce5ef into 7a5efab57e195db8e0f7549a83be9ccd0991a06f - view on LGTM.com

new alerts:

• 1 for Dereferenced variable may be null