cbdatarecovery should support --version

cbdatarecovery utility has been added to the tools package, but unlike the other utilities in the tools package, it does not support the --version option.

It should support the --version option since it can now be downloaded separately from the Server.

Example:

$ wget https://packages.couchbase.com/releases/7.6.0/couchbase-server-tools_7.6.0-linux_x86_64.tar.gz

$ gunzip -c couchbase-server-tools_7.6.0-linux_x86_64.tar.gz | tar -xvf -

$ cd bin

$ ls -l

total 196972

-rwxr-xr-x. 1 ec2-user ec2-user 60857568 Mar  2 21:19 cbbackupmgr

-rwxr-xr-x. 1 ec2-user ec2-user 48186632 Mar  2 21:27 cbdatarecovery

-rwxr-xr-x. 1 ec2-user ec2-user 44264408 Mar  2 21:19 cbexport

-rwxr-xr-x. 1 ec2-user ec2-user 48385536 Mar  2 21:19 cbimport

$ cbbackupmgr --version

cbbackupmgr version 7.6.0-2176 (8eeaccdf)

$ cbexport --version

cbexport version 7.6.0-2176 (8eeaccdf)

$ cbimport --version

cbimport version 7.6.0-2176 (8eeaccdf)

$ cbdatarecovery --version

Unknown flag: --version