cls/rgw/cls_rgw.cc: init start_key_added with false

Fix for coverity issue:

CID 1049231 (#1 of 1): Uninitialized scalar variable (UNINIT)
  uninit_use: Using uninitialized value "start_key_added".

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
test_cls_version.cc: fix ressource leak

CID 1049220 (#18 of 18): Resource leak (RESOURCE_LEAK)
  leaked_storage: Variable "rop" going out of scope leaks
  the storage it points to.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
test_cls_version.cc: fix another ressource leak

CID 1049219 (#17 of 17): Resource leak (RESOURCE_LEAK)
  leaked_storage: Variable "op" going out of scope leaks the
  storage it points to.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
test_cls_version.cc: fix resource leak, delete before new()

CID 1049217 (#1 of 1): Resource leak (RESOURCE_LEAK)
  overwrite_var: Overwriting "op" in "op = new_op()" leaks
  the storage that "op" points to.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
test_cls_version.cc: fix resource leak, delete before new()

Fix some more cases where resource wasn't deleted/freed before
call new().

CID 1049216 (#1-9 of 9): Resource leak (RESOURCE_LEAK)
  overwrite_var: Overwriting "op" in "op = new_op()" leaks
  the storage that "op" points to.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
test_cls_statelog.cc: fix resource leak, delete rop at end of function

CID 1049215 (#12 of 12): Resource leak (RESOURCE_LEAK)
  leaked_storage: Variable "rop" going out of scope leaks the
  storage it points to.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
test_cls_statelog.cc: fix resource leak, delete op at end of function

CID 1049214 (#13 of 13): Resource leak (RESOURCE_LEAK)
  leaked_storage: Variable "op" going out of scope leaks the
  storage it points to.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
test_cls_statelog.cc: fix resource leak, delete 'rop' at end of function

CID 1049213 (#3 of 3): Resource leak (RESOURCE_LEAK)
  leaked_storage: Variable "rop" going out of scope leaks the
  storage it points to.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
Merge pull request #456 from dalgaaf/wip-da-CID-1

Fix CID issues

Reviewed-by: Sage Weil <sage@inktank.com>
Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>