Default to including Python go-algorand E2E tests in buildtestdata.sh

[michaeldiamant]

Summary

Default to including Python go-algorand E2E tests in buildtestdata.sh.

• Prior to the PR, buildtestdata.sh did not include go-algorand E2E tests. The PR closes the test coverage gap.
• Additionally, exposes an environment variable to simplify user control of included tests. The exposed configuration improves workflows for local testing on select tests.

Test Plan

Example invocation with default INDEXER_BTD_TESTS:

michael@albode indexer % bash misc/buildtestdata.sh
+ set -e
+ '[' -z '' ']'
+ echo 'Using default GOALGORAND'
Using default GOALGORAND
+ GOALGORAND=/Users/michael/.asdf/installs/golang/1.14.15/packages/src/github.com/algorand/go-algorand
+ '[' -z '' ']'
+ echo 'Using default E2EDATA'
Using default E2EDATA
+ E2EDATA=/Users/michael/Algorand/e2edata
+ tests='test/scripts/e2e_subs/{*.py,*.sh}'
+ echo 'Configured tests = test/scripts/e2e_subs/{*.py,*.sh}'
Configured tests = test/scripts/e2e_subs/{*.py,*.sh}

Example invocation with override specified:

michael@albode indexer % export INDEXER_BTD_TESTS="test/scripts/e2e_subs/app-inner-calls.py"
michael@albode indexer % bash misc/buildtestdata.sh
+ set -e
+ '[' -z '' ']'
+ echo 'Using default GOALGORAND'
Using default GOALGORAND
+ GOALGORAND=/Users/michael/.asdf/installs/golang/1.14.15/packages/src/github.com/algorand/go-algorand
+ '[' -z '' ']'
+ echo 'Using default E2EDATA'
Using default E2EDATA
+ E2EDATA=/Users/michael/Algorand/e2edata
+ tests=test/scripts/e2e_subs/app-inner-calls.py
+ echo 'Configured tests = test/scripts/e2e_subs/app-inner-calls.py'
Configured tests = test/scripts/e2e_subs/app-inner-calls.py