tests: Respect configured or detected Python more often

Relying on the virtualenv default or hardcoding "python" results in a Python
2.x virtualenv on some targets (e.g. debian10-test). This caused a failure
when testing with Ansible >= 10 (ansible-core >= 2.17), which have dropped
Python 2.x support.

refs #1074

tests/ansible/integration/interpreter_discovery/complex_args.yml

@@ -25,8 +25,7 @@
     #     special_python: source /tmp/fake && python
     - name: set python using sourced file
       set_fact:
-        # Avoid 2.x vs 3.x cross-compatiblity issues (that I can't remember the exact details of).
-        special_python: "source /tmp/fake || true && python{{ ansible_facts.python.version.major }}"
+        special_python: "source /tmp/fake || true && {{ ansible_facts.python.executable }}"
 
     - name: run get_url with specially-sourced python
       uri:

tests/ansible/integration/stub_connections/kubectl.yml

@@ -12,7 +12,6 @@
   - custom_python_detect_environment:
     vars:
       ansible_connection: kubectl
-      ansible_python_interpreter: python  # avoid Travis virtualenv breakage
       mitogen_kubectl_path: stub-kubectl.py
     register: out
 

tests/ansible/integration/stub_connections/lxc.yml

@@ -8,7 +8,6 @@
   - custom_python_detect_environment:
     vars:
       ansible_connection: lxc
-      ansible_python_interpreter: python  # avoid Travis virtualenv breakage
       mitogen_lxc_attach_path: stub-lxc-attach.py
     register: out
 

tests/ansible/integration/stub_connections/lxd.yml

@@ -8,7 +8,6 @@
   - custom_python_detect_environment:
     vars:
       ansible_connection: lxd
-      ansible_python_interpreter: python  # avoid Travis virtualenv breakage
       mitogen_lxc_path: stub-lxc.py
     register: out
 

tests/ansible/integration/stub_connections/mitogen_doas.yml

@@ -8,7 +8,6 @@
   - custom_python_detect_environment:
     vars:
       ansible_connection: mitogen_doas
-      ansible_python_interpreter: python  # avoid Travis virtualenv breakage
       ansible_doas_exe: stub-doas.py
       ansible_user: someuser
     register: out

tests/ansible/integration/stub_connections/mitogen_sudo.yml

@@ -8,7 +8,6 @@
   - custom_python_detect_environment:
     vars:
       ansible_connection: mitogen_sudo
-      ansible_python_interpreter: python  # avoid Travis virtualenv breakage
       ansible_user: root
       ansible_become_exe: stub-sudo.py
       ansible_become_flags: -H --type=sometype --role=somerole

tests/ansible/regression/issue_152__virtualenv_python_fails.yml

@@ -12,7 +12,9 @@
         https_proxy: "{{ lookup('env', 'https_proxy')|default('') }}"
         no_proxy: "{{ lookup('env', 'no_proxy')|default('') }}"
         PATH: "{{ lookup('env', 'PATH') }}"
-      shell: virtualenv /tmp/issue_152_virtualenv
+      command:
+        cmd: virtualenv -p "{{ ansible_facts.python.executable }}" /tmp/issue_152_virtualenv
+        creates: /tmp/issue_152_virtualenv
       when:
         - lout.python.version.full is version('2.7', '>=', strict=True)