cmake: add ceph-common DENABLE_SHARED=OFF support

[Alexponomarev7]

I needed to build librados STATIC, for this purpose i found DENABLE_SHARED=OFF.
But librados depends on ceph-common which is always build dynamic. So i had this problem:

This small patch fixes this issue.

Checklist

• Tracker (select at least one)
  • References tracker ticket
  • Very recent bug; references commit where it was introduced
  • New feature (ticket optional)
  • Doc update (no ticket needed)
  • Code cleanup (no ticket needed)
• Component impact
  • Affects Dashboard, opened tracker ticket
  • Affects Orchestrator, opened tracker ticket
  • No impact that needs to be tracked
• Documentation (select at least one)
  • Updates relevant documentation
  • No doc update is appropriate
• Tests (select at least one)
  • Includes unit test(s)
  • Includes integration test(s)
  • Includes bug reproducer
  • No tests

[Alexponomarev7]

@tchaikov Any updates?

[ljflores]

http://pulpito.front.sepia.ceph.com/?branch=wip-yuri4-testing-2022-02-18-0800

Failures, unrelated:
https://tracker.ceph.com/issues/45721
https://tracker.ceph.com/issues/53422
https://tracker.ceph.com/issues/51627
https://tracker.ceph.com/issues/53680
https://tracker.ceph.com/issues/52320
https://tracker.ceph.com/issues/52124

Details:
1. CommandFailedError: Command failed (workunit test rados/test_python.sh) FAIL: test_rados.TestWatchNotify.test - Ceph - RADOS
2. tasks.cephfs.test_nfs.TestNFS.test_export_create_with_non_existing_fsname: AssertionError: NFS Ganesha cluster deployment failed - Ceph - Orchestrator
3. FAILED ceph_assert(attrs || !recovery_state.get_pg_log().get_missing().is_missing(soid) || (it_objects != recovery_state.get_pg_log().get_log().objects.end() && it_objects->second->op == pg_log_entry_t::LOST_REVERT)) - Ceph - RADOS
4. ERROR:tasks.rook:'waiting for service removal' reached maximum tries (90) after waiting for 900 seconds - Ceph - Orchestrator
5. unable to get monitor info from DNS SRV with service name: ceph-mon - Ceph - Orchstrator
6. Invalid read of size 8 in handle_recovery_delete() - Ceph - RADOS

[ljflores]

jenkins test windows