Return a value if exceptions are raised in server uninstall

The AdminTool class purports to "call sys.exit() with the return
value" but most of the run implementations returned no value, or
the methods they called returned nothing so there was nothing to
return, so this was a no-op.

The fix is to capture and bubble up the return values which will
return 1 if any exceptions are caught.

This potentially affects other users in that when executing the
steps of an installer or uninstaller the highest return code
will be the exit value of that installer.

Don't use the Continuous class because it doesn't add any
value and makes catching the exceptions more difficult.

https://pagure.io/freeipa/issue/7330

Signed-off-by: Rob Crittenden rcritten@redhat.com
Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>

ipapython/install/cli.py

@@ -316,10 +316,10 @@ class ConfigureTool(admintool.AdminTool):
         if self.use_private_ccache:
             with private_ccache():
                 super(ConfigureTool, self).run()
-                cfgr.run()
+                return cfgr.run()
         else:
             super(ConfigureTool, self).run()
-            cfgr.run()
+            return cfgr.run()
 
     @staticmethod
     def __signal_handler(signum, frame):