[dbnode] bootstrap: Make verbose log debug lvl

[schallert]

What this PR does / why we need it:

Fixes #

Special notes for your reviewer:

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

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

[robskillington]

LGTM

[codecov]

Codecov Report

Merging #2222 into master will increase coverage by 0.0%.
The diff coverage is 100.0%.

@@          Coverage Diff           @@
##           master   #2222   +/-   ##
======================================
  Coverage    72.3%   72.4%           
======================================
  Files        1023    1023           
  Lines       88918   88918           
======================================
+ Hits        64373   64402   +29     
+ Misses      20219   20184   -35     
- Partials     4326    4332    +6     

Flag	Coverage Δ
#aggregator	82.1% <ø> (+<0.1%)	⬆️
#cluster	85.2% <ø> (ø)
#collector	82.8% <ø> (ø)
#dbnode	79.0% <100.0%> (+<0.1%)	⬆️
#m3em	74.4% <ø> (ø)
#m3ninx	74.4% <ø> (ø)
#m3nsch	51.1% <ø> (ø)
#metrics	17.5% <ø> (ø)
#msg	74.8% <ø> (-0.2%)	⬇️
#query	68.9% <ø> (ø)
#x	83.2% <ø> (-0.1%)	⬇️

---

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

Codecov Report

Merging #2222 into master will increase coverage by 0.0%.
The diff coverage is 100.0%.

@@          Coverage Diff           @@
##           master   #2222   +/-   ##
======================================
  Coverage    72.3%   72.4%           
======================================
  Files        1023    1023           
  Lines       88918   88918           
======================================
+ Hits        64373   64402   +29     
+ Misses      20219   20184   -35     
- Partials     4326    4332    +6     

Flag	Coverage Δ
#aggregator	82.1% <ø> (+<0.1%)	⬆️
#cluster	85.2% <ø> (ø)
#collector	82.8% <ø> (ø)
#dbnode	79.0% <100.0%> (+<0.1%)	⬆️
#m3em	74.4% <ø> (ø)
#m3ninx	74.4% <ø> (ø)
#m3nsch	51.1% <ø> (ø)
#metrics	17.5% <ø> (ø)
#msg	74.8% <ø> (-0.2%)	⬇️
#query	68.9% <ø> (ø)
#x	83.2% <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 6852564...fc50a70. Read the comment docs.