CeresManager params/autoconf

CeresManager (and the SolverManager) should be modified to be able to modify parameters thru YAML.

Renaming will also be done: CeresManager->SolverCeres

added Doing label

created merge request !383 (merged) to address this issue

mentioned in merge request !383 (merged)

changed the description

closed via merge request !383 (merged)

mentioned in commit beb3ed5b