Avoid sanity excludes so that users can run ansible-test sanity --docker and it usually passes. (#260)

tests/utils/shippable/sanity.sh

@@ -34,5 +34,4 @@ fi
 # shellcheck disable=SC2086
 ansible-test sanity --color -v --junit ${COVERAGE:+"$COVERAGE"} ${CHANGED:+"$CHANGED"} \
     --docker --base-branch "${base_branch}" \
-    --exclude shippable.yml --exclude tests/utils/ \
     "${options[@]}" --allow-disabled

tests/utils/shippable/shippable.sh

@@ -28,6 +28,7 @@ python -V
 
 function retry
 {
+    # shellcheck disable=SC2034
     for repetition in 1 2 3; do
         set +e
         "$@"
@@ -36,9 +37,9 @@ function retry
         if [ ${result} == 0 ]; then
             return ${result}
         fi
-        echo "$@ -> ${result}"
+        echo "@* -> ${result}"
     done
-    echo "Command '$@' failed 3 times!"
+    echo "Command '@*' failed 3 times!"
     exit -1
 }