Clean up epydoc comments
Clean up epydoc comments

Add missing colons, and improve descriptions of parameters.

Signed-off-by: Hrvoje Ribicic <be5828fca31f89218048bec4189e30a581aa65da@google.com>
Reviewed-by: Helga Velroyen <2d0126b1ec6f9ec5cbec4a7012aa14faeaef10f5@google.com>

andir/ganeti,apyrgio/ganeti,bitemyapp/ganeti,grnet/snf-ganeti,ganeti/ganeti,mbakke/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,andir/ganeti,ganeti-github-testing/ganeti-test-1,grnet/snf-ganeti,andir/ganeti,leshchevds/ganeti,leshchevds/ganeti,yiannist/ganeti,ganeti/ganeti,yiannist/ganeti,leshchevds/ganeti,onponomarev/ganeti,yiannist/ganeti,ganeti/ganeti,bitemyapp/ganeti,mbakke/ganeti,dimara/ganeti,mbakke/ganeti,onponomarev/ganeti,apyrgio/ganeti