Clarify some tests.
Clarify some tests.

* test/test_context.c
  (test_ssltunnel_basic_auth_server_has_keepalive_off): Better name for ...
  (test_ssltunnel_basic_auth_keepalive_off): ... this. Rename parameter for
       clarity.
  (test_context): Update test name.

TommyU/serf,muthusuba/serf,TommyU/serf,liuzongquan/serf,krime/serf,idomon/serf,TommyU/serf,wzugang/serf,blueszhangsh/serf,idomon/serf,Manouchehri/serf,sworda/serf,blueszhangsh/serf,krime/serf,sworda/serf,Manouchehri/serf,muthusuba/serf,idomon/serf,sworda/serf,liuzongquan/serf,blueszhangsh/serf,wzugang/serf,justinweb/serf,blueszhangsh/serf,krime/serf,justinweb/serf,muthusuba/serf,TommyU/serf,liuzongquan/serf,Manouchehri/serf,Manouchehri/serf,liuzongquan/serf,muthusuba/serf,justinweb/serf,krime/serf,wzugang/serf,wzugang/serf,justinweb/serf,sworda/serf,idomon/serf