Improve dev environment init process

This ensures that /etc/passwd is always written, regardless of how the container starts.

tools/docker-compose/bootstrap_development.sh

@@ -1,13 +1,6 @@
 #!/bin/bash
 set +x
 
-if [ `id -u` -ge 500 ] || [ -z "${CURRENT_UID}" ]; then
-    echo "root:x:0:0:root:/root:/bin/bash" > /tmp/password
-    echo "awx:x:`id -u`:`id -g`:,,,:/tmp:/bin/bash" >> /tmp/passwd
-    cat /tmp/passwd > /etc/passwd
-    rm /tmp/passwd
-fi
-
 # Wait for the databases to come up
 ansible -i "127.0.0.1," -c local -v -m wait_for -a "host=postgres port=5432" all
 ansible -i "127.0.0.1," -c local -v -m wait_for -a "host=memcached port=11211" all