Unify OTLP exporter retry logic

[MrAlias]

Update the otlptracehttp and otlptracegrpc to use the same retry logic and configuration.

Resolve #2024

[codecov]

Codecov Report

Merging #2095 (a249181) into main (abe2243) will increase coverage by 0.5%.
The diff coverage is 85.8%.

@@           Coverage Diff           @@
##            main   #2095     +/-   ##
=======================================
+ Coverage   72.9%   73.5%   +0.5%     
=======================================
  Files        167     168      +1     
  Lines       8240    8233      -7     
=======================================
+ Hits        6014    6058     +44     
+ Misses      1992    1935     -57     
- Partials     234     240      +6     

Impacted Files	Coverage Δ
...ters/otlp/otlptrace/internal/otlpconfig/options.go	72.5% <50.0%> (+6.4%)	⬆️
exporters/otlp/otlptrace/otlptracehttp/client.go	84.0% <78.0%> (-9.3%)	⬇️
...s/otlp/otlptrace/internal/connection/connection.go	13.7% <90.9%> (+11.3%)	⬆️
exporters/otlp/otlptrace/internal/retry/retry.go	100.0% <100.0%> (ø)
exporters/otlp/otlptrace/otlptracegrpc/options.go	79.1% <100.0%> (ø)
exporters/otlp/otlptrace/otlptracehttp/options.go	100.0% <100.0%> (ø)

[jmacd]

LGTM