Reference updated in the README.md
tests/client -> tests/clients
VOMS-529 Regression test in client voms-testsuite

Signed-off-by: giannidallatorre <dallatorre@cnaf.infn.it>
Setup for empty certdir with a 600 userkey test
moved from "Test Cases" to "Keywords"
Simplified "See if voms-proxy-init --certdir with a 600 userkey works" (Test Case)

Removing "Keywords":
Use certificate with a 600 userkey  [Arguments]   ${cert}
Setup for empty certdir with a 600 userkey test
Test moved and fixed

name: “See if voms-proxy-init works using a 600 userkey”
in test/clients/init/text.txt
Updated link to certificates' rpm
Merge pull request #2 from italiangrid/VOMS-529

Voms 529