Got EVLA CMS restores working via casa_envoy, using casa_restorepipescript.py when it exists

Restores have been manually tested both with a PPR in the arguments (but no piperestorescript in the cal tar) and without one (with a piperestorescript in the cal tar). No other use-cases of casa_envoy have been manually tested.

To test restores with piperestorescript:

1. Copy the following from /lustre/aoc/cluster/pipeline/dsoc-dev/workspaces/skagan_testing/test_data/with_piperestorescript_2 into your own testing directory:
   1. rawdata/
   2. metadata.json
2. Add empty products and working directories
3. Remove rawdata/products
4. Call /lustre/aoc/cluster/pipeline/dsoc-dev/workspaces/skagan_testing/skagan-casa_envoy3 --restore metadata.json

Without piperestorescript (differences bolded):

1. Copy the following from /lustre/aoc/cluster/pipeline/dsoc-dev/workspaces/skagan_testing/test_data/sans_piperestorescript_with_ppr_in_args into your own testing directory:
   1. rawdata/
   2. metadata.json
   3. PPR.xml
2. Add empty products and working directories
3. Remove rawdata/products
4. Call /lustre/aoc/cluster/pipeline/dsoc-dev/workspaces/skagan_testing/skagan-casa_envoy3 --restore metadata.json PPR.xml

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

@@ -173,6 +173,10 @@ class CalibrationLauncher(LauncherIF):
         if self.parameters["product_type"] == ProductType.RESTORE.value:
             restore_foundation = RestoreFoundation(self.parameters, self.metadata)
             restore_foundation.data_foundation()
+            # This won't do anything,
+            #     unless parameters["ppr"] wasn't set from casa_envoy's arguments,
+            #     in which case it'll set it with the PPR.xml in the tarball
+            self.parameters["ppr"] = str(restore_foundation.parameters["ppr"])
             if restore_foundation.piperestorescript_path:
                 # Need to make this available to the Runner if it exists
                 self.parameters["piperestorescript_path"] = restore_foundation.piperestorescript_path