s4-tests/env_loadparm: Throw KeyError in case SMB_CONF_PATH
A bit more specific for the caller to "know" that env key is missing
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11804
Change-Id: I4d4c2121af868d79f46f865f420336222bc67347
Signed-off-by: Kamen Mazdrashki <kamenim@samba.org>
Reviewed-by: Jelmer Vernooij <jelmer@samba.org>
Autobuild-User(master): Kamen Mazdrashki <kamenim@samba.org>
Autobuild-Date(master): Mon Dec 8 05:27:34 CET 2014 on sn-devel-104
(cherry picked from commit
29732b0d427472041bf3a586f3eeb281ccd408d5)