quickstart broken in fish shell

[Honza Pokorny]

When the `bash quickstart.sh ...` command is run from the fish shell[1], it fails with a confusing message. It says it can't find coreutils binaries like sed, touch or rm.

Steps to reproduce:

git clone tripleo-quickstart
cd tripleo-quickstart
virtualenv venv
source venv/bin/activate.fish
pip install -r requirements.txt
pip install -r quickstart-extra-requirements.txt
bash quickstart.sh --release master --no-clone <virthost>

Output:

New python executable in /home/user/.quickstart/bin/python2
Also creating executable in /home/user/.quickstart/bin/python
Installing setuptools, pip, wheel...done.
Requirement already up-to-date: pip in /home/user/.quickstart/lib/python2.7/site-packages
~/code/tripleo-quickstart ~/code/tripleo-quickstart
quickstart.sh: line 128: sed: command not found
ERROR: bootstrap failed; try "quickstart.sh --install-deps"
       to install package dependencies or "quickstart.sh --clean"
       to remove /home/user/.quickstart and start over

But of course, "sed" is there.

[1]: https://fishshell.com/

[Honza Pokorny (hpokorny)]

Latest master supports the fish shell (I decided to give it a try today to see if it was still broken).