Remove deprecated cinder::base class

cinder::base class has been deprecated since before 2.0.0 release.

Closes-bug: #1271737
Change-Id: I7116bc200b791be159108642ecff9874ee54cd6b
Fix typo in cinder_scheduler_spec

Change-Id: I5b58adddb1a021b2e7c1e76b479c3a1e410e8029
Merge "Remove deprecated cinder::base class"
Merge "Fix typo in cinder_scheduler_spec"