fixing casa restore foundation for edge case where cal tar unpacks differently

apps/cli/executables/pexable/casa_envoy/casa_envoy/foundation.py

@@ -47,7 +47,14 @@ class RestoreFoundation(FoundationIF):
             calibration.extractall("./rawdata")
             calibration.close()
             src = "./rawdata/products"
-            copy_tree(src, "./products/")
+            src2 = "./rawdata/" + cal_name.split(".")[0] + "/products"
+            if Path(src).exists():
+                copy_tree(src, "./products/")
+            elif Path(src2).exists():
+                copy_tree(src2, "./products")
+            else:
+                self.logger.error(f"ERROR: calibration tar file {cal_name} failed to extract correctly!")
+
         else:
             self.logger.error(f"ERROR: calibration tar file {cal_name} not found in rawdata!")
             # abort since required data not found