Python: Switch pyls on interpreter change

Change-Id: I458b635986a55003a1e7254e27e2df9667704273
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/python/pythonrunconfiguration.h

@@ -46,6 +46,7 @@ public:
 
 private:
     void doAdditionalSetup(const ProjectExplorer::RunConfigurationCreationInfo &) final;
+    void updateLanguageServer();
 
     bool supportsDebugger() const;
     QString mainScript() const;