[query] Propagate Limit settings for remote reads

[arnikola]

What this PR does / why we need it:

Limit was not correctly propagated for remote reads, which could OOM clusters when using the Prometheus remote read endpoints.

Does this PR introduce a user-facing and/or backwards incompatible change?:

Users who set a low limit but relied on the prom read endpoints may see less data returned, but this is unlikely, and is easily fixed by updating the limit in coordinator settings.

Does this PR require updating code package or user-facing documentation?:

NONE

[codecov]

Codecov Report

Merging #1685 into master will increase coverage by <.1%.
The diff coverage is 59%.

@@           Coverage Diff            @@
##           master   #1685     +/-   ##
========================================
+ Coverage    71.8%   71.9%   +<.1%     
========================================
  Files         970     970             
  Lines       81265   81276     +11     
========================================
+ Hits        58419   58460     +41     
+ Misses      19012   18983     -29     
+ Partials     3834    3833      -1

Flag	Coverage Δ
#aggregator	82.4% <ø> (ø)	⬆️
#cluster	85.7% <ø> (ø)	⬆️
#collector	63.9% <ø> (ø)	⬆️
#dbnode	80% <ø> (ø)	⬆️
#m3em	73.2% <ø> (ø)	⬆️
#m3ninx	74.1% <ø> (ø)	⬆️
#m3nsch	51.1% <ø> (ø)	⬆️
#metrics	17.6% <ø> (ø)	⬆️
#msg	74.7% <ø> (ø)	⬆️
#query	66.3% <59%> (-0.1%)	⬇️
#x	86% <ø> (+0.1%)	⬆️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov]

Codecov Report

Merging #1685 into master will increase coverage by <.1%.
The diff coverage is 59%.

@@           Coverage Diff            @@
##           master   #1685     +/-   ##
========================================
+ Coverage    71.8%   71.9%   +<.1%     
========================================
  Files         970     970             
  Lines       81265   81276     +11     
========================================
+ Hits        58419   58460     +41     
+ Misses      19012   18983     -29     
+ Partials     3834    3833      -1

Flag	Coverage Δ
#aggregator	82.4% <ø> (ø)	⬆️
#cluster	85.7% <ø> (ø)	⬆️
#collector	63.9% <ø> (ø)	⬆️
#dbnode	80% <ø> (ø)	⬆️
#m3em	73.2% <ø> (ø)	⬆️
#m3ninx	74.1% <ø> (ø)	⬆️
#m3nsch	51.1% <ø> (ø)	⬆️
#metrics	17.6% <ø> (ø)	⬆️
#msg	74.7% <ø> (ø)	⬆️
#query	66.3% <59%> (-0.1%)	⬇️
#x	86% <ø> (+0.1%)	⬆️

---

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 68580c0...fe7b3e8. Read the comment docs.

[codecov]

Codecov Report

Merging #1685 into master will increase coverage by <.1%.
The diff coverage is 59%.

@@           Coverage Diff            @@
##           master   #1685     +/-   ##
========================================
+ Coverage    71.8%   71.9%   +<.1%     
========================================
  Files         970     970             
  Lines       81265   81276     +11     
========================================
+ Hits        58419   58460     +41     
+ Misses      19012   18983     -29     
+ Partials     3834    3833      -1

Flag	Coverage Δ
#aggregator	82.4% <ø> (ø)	⬆️
#cluster	85.7% <ø> (ø)	⬆️
#collector	63.9% <ø> (ø)	⬆️
#dbnode	80% <ø> (ø)	⬆️
#m3em	73.2% <ø> (ø)	⬆️
#m3ninx	74.1% <ø> (ø)	⬆️
#m3nsch	51.1% <ø> (ø)	⬆️
#metrics	17.6% <ø> (ø)	⬆️
#msg	74.7% <ø> (ø)	⬆️
#query	66.3% <59%> (-0.1%)	⬇️
#x	86% <ø> (+0.1%)	⬆️

---

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 68580c0...fe7b3e8. Read the comment docs.

[codecov]

Codecov Report

Merging #1685 into master will increase coverage by <.1%.
The diff coverage is 59%.

@@           Coverage Diff            @@
##           master   #1685     +/-   ##
========================================
+ Coverage    71.8%   71.9%   +<.1%     
========================================
  Files         970     970             
  Lines       81265   81276     +11     
========================================
+ Hits        58419   58460     +41     
+ Misses      19012   18983     -29     
+ Partials     3834    3833      -1

Flag	Coverage Δ
#aggregator	82.4% <ø> (ø)	⬆️
#cluster	85.7% <ø> (ø)	⬆️
#collector	63.9% <ø> (ø)	⬆️
#dbnode	80% <ø> (ø)	⬆️
#m3em	73.2% <ø> (ø)	⬆️
#m3ninx	74.1% <ø> (ø)	⬆️
#m3nsch	51.1% <ø> (ø)	⬆️
#metrics	17.6% <ø> (ø)	⬆️
#msg	74.7% <ø> (ø)	⬆️
#query	66.3% <59%> (-0.1%)	⬇️
#x	86% <ø> (+0.1%)	⬆️

---

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 68580c0...fe7b3e8. Read the comment docs.

[codecov]

Codecov Report

Merging #1685 into master will increase coverage by <.1%.
The diff coverage is 59%.

@@           Coverage Diff            @@
##           master   #1685     +/-   ##
========================================
+ Coverage    71.8%   71.9%   +<.1%     
========================================
  Files         970     970             
  Lines       81265   81276     +11     
========================================
+ Hits        58419   58460     +41     
+ Misses      19012   18983     -29     
+ Partials     3834    3833      -1

Flag	Coverage Δ
#aggregator	82.4% <ø> (ø)	⬆️
#cluster	85.7% <ø> (ø)	⬆️
#collector	63.9% <ø> (ø)	⬆️
#dbnode	80% <ø> (ø)	⬆️
#m3em	73.2% <ø> (ø)	⬆️
#m3ninx	74.1% <ø> (ø)	⬆️
#m3nsch	51.1% <ø> (ø)	⬆️
#metrics	17.6% <ø> (ø)	⬆️
#msg	74.7% <ø> (ø)	⬆️
#query	66.3% <59%> (-0.1%)	⬇️
#x	86% <ø> (+0.1%)	⬆️

---

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 68580c0...fe7b3e8. Read the comment docs.

[robskillington]

LGTM