Convert function names to lowercase
Convert function names to lowercase

Converts the function names in samples.yml to lowercase

Signed-off-by: Grant Sheehan <cf04ab0aa76bb7aefd7ee3e2f32b24bfa03906c6@gmail.com>

alexellis/faas,rgee0/faas,rgee0/faas,openfaas/faas,rgee0/faas,rgee0/faas,rgee0/faas,alexellis/faas,alexellis/faas,rgee0/faas,alexellis/faas,rgee0/faas,openfaas/faas,alexellis/faas,alexellis/faas,rgee0/faas,rgee0/faas,alexellis/faas,alexellis/faas,alexellis/faas,openfaas/faas,rgee0/faas