Add LED_FP_TRICOLOR to base class

[vivekverma-arista]

Fixes: #331

Regression due to: 3c9544c#diff-db174f71c8d30281408b6f140bc8c232dc69d1394d28bb0a6320208712e0af0fR27

This caused unexpected syslogs

E               Failed: Processes "['analyze_logs--<MultiAsicSonicHost bjw-can-7260-14>']" failed with exit code "1"
E               Exception:
E               match: 4
E               expected_match: 0
E               expected_missing_match: 0
E               
E               Match Messages:
E               Nov 19 07:28:41.062861 bjw-can-7260-14 ERR pmon#ledd[31]: Failed to load ledutil: Failed to instantiate 'LedControl' class: 'Gardena' object has no attribute 'LED_FP_TRICOLOR'
E               
E               Nov 19 07:28:42.826540 bjw-can-7260-14 ERR pmon#ledd[75]: Failed to load ledutil: Failed to instantiate 'LedControl' class: 'Gardena' object has no attribute 'LED_FP_TRICOLOR'
E               
E               Nov 19 07:28:46.168558 bjw-can-7260-14 ERR pmon#ledd[92]: Failed to load ledutil: Failed to instantiate 'LedControl' class: 'Gardena' object has no attribute 'LED_FP_TRICOLOR'
E               
E               Nov 19 07:28:49.601844 bjw-can-7260-14 ERR pmon#ledd[121]: Failed to load ledutil: Failed to instantiate 'LedControl' class: 'Gardena' object has no attribute 'LED_FP_TRICOLOR'
E               
E               Traceback: