Rename DoubleSummary to Summary, preparation for proto upgrade to v0.8.0

[bogdandrutu]

Signed-off-by: Bogdan Drutu [email protected]

[codecov]

Codecov Report

Merging #2774 (a075ac1) into main (3a9b4d8) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #2774   +/-   ##
=======================================
  Coverage   91.75%   91.75%           
=======================================
  Files         292      292           
  Lines       15555    15555           
=======================================
  Hits        14272    14272           
  Misses        878      878           
  Partials      405      405           

Impacted Files	Coverage Δ
consumer/pdata/generated_metrics.go	100.00% <100.00%> (ø)
consumer/pdata/metric.go	99.23% <100.00%> (ø)
exporter/loggingexporter/logging_exporter.go	96.40% <100.00%> (ø)
translator/internaldata/metrics_to_oc.go	97.83% <100.00%> (ø)
translator/internaldata/oc_to_metrics.go	91.24% <100.00%> (ø)

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[tigrannajaryan]

Please fix the merge conflict.