Enable logging from user threads

[EvanR-Dev]

Description

Addresses #1158

---

Adds thread local storage to context to enable logging from user threads. Exposes it to user so that its invocation ID can be set to the context of the executing function. This means the thread local storage is in sync with the invocation ID of executed functions when set.

PR information

• The title of the PR is clear and informative.
• There are a small number of commits, each of which has an informative message. This means that previously merged commits do not appear in the history of the PR. For information on cleaning up the commits in your pull request, see this page.
• If applicable, the PR references the bug/issue that it fixes in the description.
• New Unit tests were added for the changes made and CI is passing.

Quality of Code and Contribution Guidelines

• I have read the contribution guidelines.

[codecov]

Codecov Report

Merging #1171 (da49b42) into dev (041fbce) will decrease coverage by 51.95%.
The diff coverage is 40.00%.

❗ Current head da49b42 differs from pull request most recent head 5dff325. Consider uploading reports for the commit 5dff325 to get more accurate results

@@             Coverage Diff             @@
##              dev    #1171       +/-   ##
===========================================
- Coverage   83.94%   32.00%   -51.95%     
===========================================
  Files          34       34               
  Lines        1893     1900        +7     
  Branches      365      366        +1     
===========================================
- Hits         1589      608      -981     
- Misses        233     1291     +1058     
+ Partials       71        1       -70     

Flag	Coverage Δ
unittests	32.00% <40.00%> (-51.89%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
azure_functions_worker/dispatcher.py	19.54% <0.00%> (-69.52%)	⬇️
azure_functions_worker/bindings/context.py	60.00% <66.66%> (-27.50%)	⬇️
...e_functions_worker/bindings/nullable_converters.py	21.62% <0.00%> (-78.38%)	⬇️
azure_functions_worker/functions.py	25.00% <0.00%> (-71.28%)	⬇️
azure_functions_worker/utils/tracing.py	31.81% <0.00%> (-68.19%)	⬇️
azure_functions_worker/utils/common.py	33.33% <0.00%> (-66.67%)	⬇️
.../shared_memory_data_transfer/file_accessor_unix.py	19.60% <0.00%> (-57.85%)	⬇️
azure_functions_worker/bindings/meta.py	25.30% <0.00%> (-57.84%)	⬇️
...s/shared_memory_data_transfer/shared_memory_map.py	28.57% <0.00%> (-55.36%)	⬇️
... and 16 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[EvanR-Dev]

@EvanR-Dev please read the following Contributor License Agreement(CLA). If you agree with the CLA, please reply with the following information.

@microsoft-github-policy-service agree [company="{your company}"]

Options:

• (default - no company specified) I have sole ownership of intellectual property rights to my Submissions and I am not making Submissions in the course of work for my employer.

@microsoft-github-policy-service agree

• (when company given) I am making Submissions in the course of work for my employer (or my employer has intellectual property rights in my Submissions by contract or applicable law). I have permission from my employer to make Submissions and enter into this Agreement on behalf of my employer. By signing below, the defined term “You” includes me and my employer.

@microsoft-github-policy-service agree company="Microsoft"

Contributor License Agreement

@microsoft-github-policy-service agree company="Microsoft"