Run some tests with the latest PyPi version of Docker SDK for Python (#348)

* Run some tests with the latest PyPi version of Docker SDK for Python.

* Use new enough Python so we can actually install the latest Docker SDK for Python.

* Ansibilize

* Fix test.

* Fix two stupid errors by myself.

tests/utils/shippable/remote.sh

@@ -7,20 +7,33 @@ IFS='/:' read -ra args <<< "$1"
 
 platform="${args[0]}"
 version="${args[1]}"
+target="shippable/posix/"
 
-if [ "${#args[@]}" -gt 2 ]; then
+force_python=""
+
+if [ "${#args[@]}" -gt 3 ]; then
+    if [ "${args[2]}" == "pypi-latest" ]; then
+        echo 'force_docker_sdk_for_python_pypi: true' >> tests/integration/interation_config.yml
+        if [ "${platform}" == "rhel" ] && [[ "${version}" =~ ^8\. ]]; then
+            # Use Python 3.8 on RHEL 8.x - TODO: this might be no longer necessary for high enough minor version! Check!
+            force_python="--python 3.8"
+        fi
+    else
+        echo "Invalid Docker SDK for Python version: '${args[2]}'"
+        exit 254
+    fi
+    target="shippable/posix/group${args[3]}/"
+elif [ "${#args[@]}" -gt 2 ]; then
     target="shippable/posix/group${args[2]}/"
-else
-    target="shippable/posix/"
 fi
 
 stage="${S:-prod}"
 provider="${P:-default}"
 
-if [ "${platform}" == "rhel" ] && [[ "${version}" =~ ^8 ]]; then
+if [ "${platform}" == "rhel" ] && [[ "${version}" =~ ^8\. ]]; then
     echo "pynacl >= 1.4.0, < 1.5.0; python_version == '3.6'" >> tests/utils/constraints.txt
 fi
 
 # shellcheck disable=SC2086
 ansible-test integration --color -v --retry-on-error "${target}" ${COVERAGE:+"$COVERAGE"} ${CHANGED:+"$CHANGED"} ${UNSTABLE:+"$UNSTABLE"} \
-    --remote "${platform}/${version}" --remote-terminate always --remote-stage "${stage}" --remote-provider "${provider}"
+    --remote "${platform}/${version}" --remote-terminate always --remote-stage "${stage}" --remote-provider "${provider}" ${force_python}