Fixes unmarshalling of tailing responses.

[cyriltovena]

Some websocket were still using old json package.

Signed-off-by: Cyril Tovena [email protected]

[codecov-io]

Codecov Report

Merging #3237 (5324aca) into master (567ccde) will decrease coverage by 0.08%.
The diff coverage is 52.17%.

@@            Coverage Diff             @@
##           master    #3237      +/-   ##
==========================================
- Coverage   63.14%   63.06%   -0.09%     
==========================================
  Files         197      198       +1     
  Lines       16712    16795      +83     
==========================================
+ Hits        10553    10591      +38     
- Misses       5207     5238      +31     
- Partials      952      966      +14     

Impacted Files	Coverage Δ
cmd/docker-driver/config.go	9.34% <0.00%> (ø)
pkg/distributor/http.go	0.00% <0.00%> (ø)
pkg/logcli/query/tail.go	0.00% <0.00%> (ø)
pkg/loki/loki.go	0.00% <0.00%> (ø)
pkg/loki/modules.go	3.24% <0.00%> (-0.02%)	⬇️
pkg/ruler/manager/compat.go	45.83% <0.00%> (ø)
pkg/logql/unmarshal/unmarshal.go	75.00% <50.00%> (-8.34%)	⬇️
pkg/loki/config_handler.go	61.64% <61.64%> (ø)
pkg/distributor/distributor.go	76.38% <100.00%> (ø)
pkg/promtail/targets/file/tailer.go	73.21% <0.00%> (-5.36%)	⬇️
... and 4 more

[slim-bean]

LGTM