Update PyCharm version

* Update PyCharm to 2017.3
* Add removal of old PyCharm installations

roles/pycharm/tasks/main.yml

@@ -20,6 +20,7 @@
     path: /usr/local/bin/pycharm
     src: "/usr/local/pycharm/{{ pycharm_name | regex_replace('-professional') }}/bin/pycharm.sh"
     state: link
+  register: new_version
 
 - name: add Desktop-icon
   template:
@@ -30,3 +31,11 @@
     group: users
     mode: 0744
   ignore_errors: yes
+
+- name: uninstalled old versions
+  become: yes
+  file:
+    state: absent
+    path: "/usr/local/pycharm/{{ item | regex_replace('-professional') }}"
+  with_items: "{{ old_versions }}"
+  when: new_version.changed

roles/pycharm/vars/main.yml

 ---
-pycharm_name: pycharm-professional-2017.2.4
+pycharm_name: pycharm-professional-2017.3
+old_versions:
+  - pycharm-professional-2017.2.4
+