Improve CI (#3348)

* Remove superfluous test.

* Use remote_temp_dir instead of output_dir on remote.

* Read certificate from correct place.

* Adjust more places.

* Fix boolean.

* Improve cryptography setup.

* Fix java_keystore changes.

* Need to copy binary from remote.

* Use correct Python for serve script.

* Sleep before downloading.

* Use correct Python interpreter.

* Avoid failing shebang test.

* Fix permission error with macOS 11.1.

* Avoid shebang trouble.

tests/integration/targets/mail/tasks/main.yml

@@ -16,7 +16,7 @@
 - name: Install test smtpserver
   copy:
     src: '{{ item }}'
-    dest: '{{ output_dir }}/{{ item }}'
+    dest: '{{ remote_tmp_dir }}/{{ item }}'
   loop:
   - smtpserver.py
   - smtpserver.crt
@@ -25,7 +25,7 @@
 # FIXME: Verify the mail after it was send would be nice
 #        This would require either dumping the content, or registering async task output
 - name: Start test smtpserver
-  shell: '{{ ansible_python.executable }} {{ output_dir }}/smtpserver.py 10025:10465'
+  shell: '{{ ansible_python.executable }} {{ remote_tmp_dir }}/smtpserver.py 10025:10465'
   async: 30
   poll: 0
   register: smtpserver