chore: add scripts which were previously ignored (#4240)

...because they were in a directory called "dist"

packages/aws-cdk/.gitignore

@@ -14,3 +14,5 @@ coverage
 .nycrc
 .LAST_PACKAGE
 *.snk
+
+!test/integ/run-wrappers/dist

packages/aws-cdk/test/integ/run-against-dist.bash

@@ -175,8 +175,6 @@ function prepare_python_packages() {
   # later which will re-hijack ours with a 'pip' binary. Use a function instead,
   # the real logic will reside in "pip_"
 
-  ORIGINAL_PIP=$(type -p pip) || { echo "No 'pip' found" >&2; exit 1; }
-  export ORIGINAL_PIP
   export PYTHON_WHEELS=$dist_root/python
 
   if [ ! -d "$PYTHON_WHEELS" ]; then
@@ -188,5 +186,5 @@ function prepare_python_packages() {
 }
 
 function pip() {
-  exec pip_ "$@"
+  pip_ "$@"
 }

packages/aws-cdk/test/integ/run-wrappers/dist/dotnet

@@ -0,0 +1,10 @@
+#!/bin/bash
+set -eu
+if [[ "${1:-}" == "build" ]]; then
+  shift
+  exec $ORIGINAL_DOTNET build \
+    --source $NUGET_SOURCE \
+    "$@"
+fi
+
+exec $ORIGINAL_DOTNET "$@"

packages/aws-cdk/test/integ/run-wrappers/dist/pip_

@@ -0,0 +1,10 @@
+#!/bin/bash
+set -eu
+if [[ "${1:-}" == "install" ]]; then
+  # Just install all wheels from the source repository.
+  # It's too hard to figure out what was actually requested, and
+  # this is pretty quick anyway.
+  exec pip install $PYTHON_WHEELS/*.whl
+fi
+
+exec pip "$@"