Pin lbaas and lbaas-dashboard to last commit before retiring
Pin lbaas and lbaas-dashboard to last commit before retiring

lbaas projects are being retired in Train cycle [1][2]. Before fully
retiring it from RDO, to make transition smooth for deployment projects,
let's pin them to the last commit before retiring.

[1] https://review.opendev.org/#/c/658494/
[2] https://review.opendev.org/#/c/658495/

Change-Id: I29758845e0370e68a12bae8d1470c953323b948d

javierpena/rdoinfo,redhat-openstack/rdoinfo