Handle errors when downloading acli

[generalredneck]

Ran into a symptom where an acquia client was reciving errors that looked like this

/mnt/www/html/#####/vendor/bin/acli: line 1: syntax error near unexpected token `<'
/mnt/www/html/#####/vendor/bin/acli: line 1: `<?xml version="1.0" encoding="utf-8"?><Error><Code>ServerBusy</Code><Message>Egress is over the account limit.'
Sync DB from prod to test
/mnt/www/html/#####/vendor/bin/acli: line 1: syntax error near unexpected token `<'
/mnt/www/html/#####/vendor/bin/acli: line 1: `<?xml version="1.0" encoding="utf-8"?><Error><Code>ServerBusy</Code><Message>Egress is over the account limit.'

turns out the contents of acli was that exact xml

<?xml version="1.0" encoding="utf-8"?><Error><Code>ServerBusy</Code><Message>Egress is over the account limit.
RequestId:8ea585a4-d01e-0008-3278-fb386a000000
Time:2022-11-18T18:08:46.7466098Z</Message></Error>

We need to validate that the download of acli doesn't return an error from github and we get the actual download.