lldpd: Implement location parameter
Previously only partially implemented. After commit
5007f488bb5e1b556052ef246bd3822fed8d09d2 lldp_location was never removed
Now, add the value of lldp_location to the generated config.
The location param has a few syntaxes, so the config acquires the first
usage from the man page: 'address country EU'
Supplementary fix for PR #14193 (this param was included in the original
PR #13018 but the lldp_location fixes were absent from PR #14193).
Tested on 22.03.5, 22.03.6
Signed-off-by: Paul Donald <newtwen@gmail.com>