messages: Intilizating uninitized members MMonGetVersionReply

messages: Intilizating uninitized members MMonGetVersionReply

Fixes coverity Issue:

** 717297 Uninitialized scalar field
2. uninit_member: Non-static class member handle is not initialized in this constructor nor in any functions that it calls.
  	4. uninit_member: Non-static class member version is not initialized in this constructor nor in any functions that it calls.

CID 717297 (#1 of 1): Uninitialized scalar field (UNINIT_CTOR)
6. uninit_member: Non-static class member oldest_version is not initialized in this constructor nor in any functions that it calls.

Signed-off-by: Amit Kumar amitkuma@redhat.com