CI: fix wrong variable name in build scripts

Author: lukaszstolarczuk

utils/docker/prepare-for-build.sh

@@ -12,7 +12,7 @@ set -e
 
 INSTALL_DIR=/tmp/libpmemobj-cpp
 EXAMPLE_TEST_DIR=/tmp/build_example
-TEST_DIR=${PMEMKV_TEST_DIR:-${DEFAULT_TEST_DIR}}
+TEST_DIR=${LIBPMEMOBJCPP_TEST_DIR:-${DEFAULT_TEST_DIR}}
 
 ### Helper functions, used in run-*.sh scripts
 function sudo_password() {

utils/docker/run-build.sh

@@ -14,7 +14,7 @@ set -e
 source $(dirname ${0})/prepare-for-build.sh
 
 # params set for this file; if not previously set, the right-hand param is used
-TEST_DIR=${PMEMKV_TEST_DIR:-${DEFAULT_TEST_DIR}}
+TEST_DIR=${LIBPMEMOBJCPP_TEST_DIR:-${DEFAULT_TEST_DIR}}
 CHECK_CPP_STYLE=${CHECK_CPP_STYLE:-ON}
 TESTS_LONG=${TESTS_LONG:-OFF}
 TESTS_TBB=${TESTS_TBB:-ON}