beam name bug fix, dest details
Merge branch 'master' of https://github.com/ska-sa/corr
destination ip bug fix

Destination ip address was being mangled, hence no data emerging.

Also changed beam id setup of bfn_cfg back to simple beam_index.

Tested and seems to be working with r359 although SPEAD receiver
discarding heaps because it gets multiple identical data ids
beamformer centre frequency and bandwidth

get and set functions
Merge branch 'master' of https://github.com/ska-sa/corr
Calibration setup bug fixes

Incorrect naming of variables in config file
ruggedization, functions to read back

access to configuration parameters now through get_beam_param, get_param
where try except blocks help identify missing parameters.

read_int and bf_read_int added that allow reading values back.

set_centre_frequency_bandwidth changed to set_bandpass
set_bandpass now stops transmission and restarts with changed
bandpass settings

get_centre_frequency, get_bandwidth combined into get_bandpass
tx_status_get

set_passband now checks tx_status_get and does not restart
beam transmission unless it is already transmitting.

Various bug fixes
small bug fix in get_passband
Merge branch 'master' of https://github.com/ska-sa/corr