hll binary e2e

[shz117]

get hll binary format working at broker.

• implemented hll post processing in agg query plan
• added option to skip enum translation for agg query result
• minor refactoring: moved some util funcs in query pkg to query/common
• for the sake of parsing dimension vector, duplicated some compiler logic from data node, used for hll and other agg queries in the future (added todos to consolidate later)
• fix non agg bug

[codecov-io]

Codecov Report

Merging #252 into master will decrease coverage by 0.72%. The diff coverage is 61.87%.

@@            Coverage Diff             @@
##           master     #252      +/-   ##
==========================================
- Coverage   69.53%   68.81%   -0.73%     
==========================================
  Files         159      162       +3     
  Lines       21758    22494     +736     
==========================================
+ Hits        15130    15479     +349     
- Misses       5483     5796     +313     
- Partials     1145     1219      +74

Impacted Files	Coverage Δ
query/aql_context.go	88.23% <ø> (ø)	:arrow_up:
utils/metrics.go	95.23% <ø> (ø)	:arrow_up:
query/aql_processor.go	79.88% <ø> (-0.26%)	:arrow_down:
broker/handler.go	0% <0%> (ø)	:arrow_up:
broker/executor.go	0% <0%> (ø)	:arrow_up:
query/time_series_aggregate.go	77.37% <100%> (ø)	:arrow_up:
api/query_handler.go	73.23% <100%> (+0.12%)	:arrow_up:
query/hll.go	92.3% <100%> (+1.05%)	:arrow_up:
query/common/dim_util.go	40.74% <40.74%> (ø)
broker/query_compiler.go	59.45% <58.76%> (-13.01%)	:arrow_down:
... and 19 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update a9c775d...90b30bf. Read the comment docs.