temp freeze releng version for stable/danube workaround

releng doesn't have a branch, so we need to freeze
the releng version.

There is an issue with releng fetch_os_creds.sh change

/home/opnfv/repos/releng/utils/fetch_os_creds.sh: line 75: BRANCH:
unbound variable

So we need to revert back to commit before this change

Change-Id: Ie8b0f68879a873aab584aa32b576d8b5ba602a13
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>

diff --git a/docker/exec_tests.sh b/docker/exec_tests.sh
index 5f6a945..4d81fa0 100755 (executable)
--- a/docker/exec_tests.sh
+++ b/docker/exec_tests.sh
@@ -16,7 +16,7 @@ set -e
 
 : ${RELENG_REPO:='https://gerrit.opnfv.org/gerrit/releng'}
 : ${RELENG_REPO_DIR:='/home/opnfv/repos/releng'}
-: ${RELENG_BRANCH:='master'} # branch, tag, sha1 or refspec
+: ${RELENG_BRANCH:='abbf19f'} # branch, tag, sha1 or refspec
 
 # git update using reference as a branch.
 # git_update_branch ref