Print the sha which was excluded from version calculation

Author: JakeGinnivan

src/GitVersionCore/VersionFilters/ShaVersionFilter.cs

@@ -24,7 +24,7 @@ public bool Exclude(BaseVersion version, out string reason)
             if (version.BaseVersionSource != null &&
                 shas.Any(sha => version.BaseVersionSource.Sha.StartsWith(sha, StringComparison.OrdinalIgnoreCase)))
             {
-                reason = "Source was ignored due to commit having been excluded by configuration";
+                reason = $"Sha {version.BaseVersionSource.Sha} was ignored due to commit having been excluded by configuration";
                 return true;
             }