Fix bug 1800: Add hostpath mount option in OSM charms

Change-Id: Ie5ef484759bd37d6cc8dcea0f32573e2a7dd3a11
Signed-off-by: David Garcia <david.garcia@canonical.com>
diff --git a/installers/charm/nbi/src/charm.py b/installers/charm/nbi/src/charm.py
index c6a7c1e..faba78a 100755
--- a/installers/charm/nbi/src/charm.py
+++ b/installers/charm/nbi/src/charm.py
@@ -122,10 +122,22 @@
         super().__init__(
             *args,
             oci_image="image",
-            debug_mode_config_key="debug_mode",
-            debug_pubkey_config_key="debug_pubkey",
             vscode_workspace=VSCODE_WORKSPACE,
         )
+        if self.config.get("debug_mode"):
+            self.enable_debug_mode(
+                pubkey=self.config.get("debug_pubkey"),
+                hostpaths={
+                    "NBI": {
+                        "hostpath": self.config.get("debug_nbi_local_path"),
+                        "container-path": "/usr/lib/python3/dist-packages/osm_nbi",
+                    },
+                    "osm_common": {
+                        "hostpath": self.config.get("debug_common_local_path"),
+                        "container-path": "/usr/lib/python3/dist-packages/osm_common",
+                    },
+                },
+            )
 
         self.kafka_client = KafkaClient(self, "kafka")
         self.framework.observe(self.on["kafka"].relation_changed, self.configure_pod)