exception: switch to public sdbus exception

SdBusError was intended to be a private error type inside sdbusplus.
Switch all catch locations to use the general sdbusplus::exception type.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I411acc5238da0ad3d14a963c0d1a3bb4791f23ff
diff --git a/json-config.hpp b/json-config.hpp
index b9bb36f..d625d49 100644
--- a/json-config.hpp
+++ b/json-config.hpp
@@ -183,7 +183,7 @@
                     }
                     confFile.clear();
                 }
-                catch (const sdbusplus::exception::SdBusError& e)
+                catch (const sdbusplus::exception::exception& e)
                 {
                     // Property unavailable on object.
                     log<level::ERR>(
@@ -196,7 +196,7 @@
                 }
             }
         }
-        catch (const sdbusplus::exception::SdBusError& e)
+        catch (const sdbusplus::exception::exception& e)
         {
             log<level::ERR>("Failed to call the SubTreePaths method",
                             entry("ERROR=%s", e.what()),