Add 'auto' to the list of accepted orientations for BarGauge. (#635)

Co-authored-by: Alan Christopher <alanchristopher@berkeley.edu>

Author: alan-christopher

CHANGELOG.rst

@@ -30,6 +30,7 @@ Changelog
 * Added unit parameter to the Table class in core
 * Added a hide parameter to ElasticsearchTarget
 * Fix value literal GAUGE_CALC_TOTAL to sum instead of total
+* Fix `BarGauge` orientation validation to accept `'auto'`
 
 0.7.0 (2022-10-02)
 ==================

grafanalib/core.py

@@ -289,6 +289,7 @@ def to_json_data(self):
 
 ORIENTATION_HORIZONTAL = 'horizontal'
 ORIENTATION_VERTICAL = 'vertical'
+ORIENTATION_AUTO = 'auto'
 
 GAUGE_DISPLAY_MODE_BASIC = 'basic'
 GAUGE_DISPLAY_MODE_LCD = 'lcd'
@@ -3371,7 +3372,9 @@ class BarGauge(Panel):
     min = attr.ib(default=0)
     orientation = attr.ib(
         default=ORIENTATION_HORIZONTAL,
-        validator=in_([ORIENTATION_HORIZONTAL, ORIENTATION_VERTICAL]),
+        validator=in_([ORIENTATION_HORIZONTAL,
+                       ORIENTATION_VERTICAL,
+                       ORIENTATION_AUTO]),
     )
     rangeMaps = attr.ib(default=attr.Factory(list))
     thresholdLabels = attr.ib(default=False, validator=instance_of(bool))