Add connectTimeout configuration option OtlpGrpc{Signal}Exporters

[jack-berg]

Followup to #5941 which adds support for OTLP gRPC exporters.

[codecov[bot]]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (8684882) 91.06% compared to head (2ecdd32) 91.06%.

Files	Patch %	Lines
...er/otlp/logs/OtlpGrpcLogRecordExporterBuilder.java	83.33%	0 Missing and 1 partial :warning:
...er/otlp/metrics/OtlpGrpcMetricExporterBuilder.java	83.33%	0 Missing and 1 partial :warning:
...porter/otlp/trace/OtlpGrpcSpanExporterBuilder.java	83.33%	0 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #6079   +/-   ##
=========================================
  Coverage     91.06%   91.06%           
- Complexity     5671     5678    +7     
=========================================
  Files           620      620           
  Lines         16553    16577   +24     
  Branches       1689     1692    +3     
=========================================
+ Hits          15074    15096   +22     
+ Misses          993      992    -1     
- Partials        486      489    +3     

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[jack-berg]

@open-telemetry/java-approvers PTAL. This should be straight forward to review / merge.