test_sample_set.rb delete, select by info, not by index.

Found another crappy test thanks to random order. In some cases, the
patient needed for the edit test was being deleted before the test could
execute. So selecting a specific patient for the delete test should make
things more robust.
3 jobs for feature-s/packageless_docker in 4 minutes and 18 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test Tools
passed #148793
test_tools

00:00:05

 
  Test Unit
passed #148794
web
test_server_unit

00:00:11

 
  Test Functional
failed #148795
docker x86_64
test_server_functional

00:04:02

 
Name Stage Failure
failed
test_server_functional Test Functional There is an unknown failure, please try again
Makefile:43: recipe for target 'functional_server' failed
make: *** [functional_server] Error 2
Stopping docker_reporter_1 ...
Stopping docker_nginx_1 ...
Stopping docker_workers_1 ...
Stopping docker_uwsgi_1 ...
Stopping docker_fuse_1 ...
Stopping docker_mysql_1 ...
Stopping docker_workers_1 ...
done Stopping docker_reporter_1 ... done Stopping docker_nginx_1 ... done Stopping docker_uwsgi_1 ... done Stopping docker_mysql_1 ... done Stopping docker_fuse_1 ... done ERROR: Job failed: exit status 1