removed read-only from flow props and http request props

[invisig0th]

No description provided.

[codecov]

Codecov Report

Merging #1840 into master will decrease coverage by 0.10%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1840      +/-   ##
==========================================
- Coverage   96.26%   96.15%   -0.11%     
==========================================
  Files         140      140              
  Lines       27425    27425              
==========================================
- Hits        26400    26371      -29     
- Misses       1025     1054      +29     

Flag	Coverage Δ
#linux	96.15% <ø> (-0.11%)	⬇️
#linux_replay	61.57% <ø> (+4.29%)	⬆️

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Impacted Files	Coverage Δ
synapse/models/inet.py	99.21% <ø> (ø)
synapse/lib/spawn.py	89.03% <0.00%> (-6.46%)	⬇️
synapse/lib/lmdbslab.py	98.46% <0.00%> (-0.62%)	⬇️
synapse/lib/trigger.py	93.39% <0.00%> (-0.45%)	⬇️
synapse/common.py	96.46% <0.00%> (-0.33%)	⬇️
synapse/lib/view.py	94.10% <0.00%> (-0.26%)	⬇️
synapse/cortex.py	95.53% <0.00%> (ø)

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