feat: reduce root span cardinality in express plugin

[gecgooden]

Which problem is this PR solving?

Fixes (partiall) open-telemetry/opentelemetry-js#897 for the express plugin. Span names should be low cardinality, and indicate that a span belongs to a class of spans.
Spans generated by incoming requests in the http plugin create spans with names such as GET /users/123, where 123 is a user identifier.
This has a high cardinality but the http plugin doesn't have the context to set a low cardinality name such as GET /users/:id.

Short description of the changes

When patching the request handler in express, we call updateName on the root span with the method of the request (eg GET), and the parameterized route (eg /users/:id) to rename it.

[linux-foundation-easycla]

The committers are authorized under a signed CLA.

• ✅ George Gooden (7b82ec1)

[gecgooden]

The failures are related to an missing dependency in the user interaction plugin (angular/angular#38526). Should I fix this by pinning the version of the dependency in this PR or should it be addressed another specific fix PR?

[vmarchaud]

The failures are related to an missing dependency in the user interaction plugin (angular/angular#38526). Should I fix this by pinning the version of the dependency in this PR or should it be addressed another specific fix PR?

Not sure but i believe #175 solves the issue

[dyladan]

I'm unlinking the linked issue since it only solves it for a single package.

[dyladan]

It looks like the build fails because our plan with circleci no longer supports the machine type we were using. Were we downgraded to a free plan? Perhaps we should consider moving tests fully to github actions as other sigs have done?

[dyladan]

@gecgooden the tests are failing because they are running in your personal CircleCI account. You need to update your account in circleci to follow this repo.

[codecov]

Codecov Report

Merging #176 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #176   +/-   ##
=======================================
  Coverage   95.06%   95.06%           
=======================================
  Files         110      110           
  Lines        5877     5881    +4     
  Branches      605      607    +2     
=======================================
+ Hits         5587     5591    +4     
  Misses        290      290           

Impacted Files	Coverage Δ
node/opentelemetry-plugin-express/src/express.ts	97.14% <0.00%> (+0.11%)	⬆️