unit test(sr): fix location of kamailio ctl tool

test/unit/include/common

@@ -2,7 +2,7 @@
 DB_ALL_MOD="acc|alias_db|auth_db|avpops|dialog|dialplan|dispatcher|domain|domainpolicy|group|imc|lcr|msilo|siptrace|speeddial|uri_db|usrloc|permissions|pdt|userblacklist"
 # root directory relative to tests
 SR_DIR="../.."
-CTL_DIR="$SR_DIR/tools"
+CTL_DIR="$SR_DIR/tools/kamctl"
 CTLRC="$CTL_DIR/kamctlrc"
 CTL="$CTL_DIR/kamctl"
 DBCTL="$CTL_DIR/kamdbctl"