Install Protoc With setup.py

[NihalHarish]

Description of changes:

• updated setup.py to install protoc

Style and formatting:

I have run pre-commit install to ensure that auto-formatting happens with every commit.

Issue number, if available

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

Merging #513 (40bba75) into master (9e790c4) will decrease coverage by 1.97%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #513      +/-   ##
==========================================
- Coverage   76.29%   74.31%   -1.98%     
==========================================
  Files         126      117       -9     
  Lines       10873    10584     -289     
==========================================
- Hits         8296     7866     -430     
- Misses       2577     2718     +141     

Impacted Files	Coverage Δ
compile_protobuf.py	0.00% <0.00%> (ø)
smdebug/pytorch/utils.py	45.23% <0.00%> (-35.72%)	:arrow_down:
smdebug/rules/action/message_action.py	81.92% <0.00%> (-15.67%)	:arrow_down:
smdebug/profiler/tf_profiler_parser.py	54.54% <0.00%> (-11.58%)	:arrow_down:
smdebug/core/logger.py	70.83% <0.00%> (-8.34%)	:arrow_down:
smdebug/rules/action/stop_training_action.py	54.68% <0.00%> (-7.82%)	:arrow_down:
smdebug/core/reduction_config.py	88.31% <0.00%> (-7.80%)	:arrow_down:
smdebug/mxnet/collection.py	73.33% <0.00%> (-6.67%)	:arrow_down:
smdebug/mxnet/utils.py	59.37% <0.00%> (-6.25%)	:arrow_down:
smdebug/core/singleton_utils.py	79.41% <0.00%> (-5.89%)	:arrow_down:
... and 20 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 9e790c4...40bba75. Read the comment docs.

[NihalHarish]

Remove the protobuf installation script and remove this line from all of the buildspecs.

Also, talk to @mchoi8739 in order to sanity check whether a RTD build will succeed with these changes. Even though this is in Python, the changes are a high level wrapper over shell commands which may not be allowed in the build environment.

The RTD build seems to be working fine with this change. I will go ahead and update all the buildspec files.