revert wildcard keyword changes

[simitt]

Motivation/summary

forward ports #4657:

fix: Revert using wildcards in template
follow up on #4655

fixes #4652

[codecov-io]

Codecov Report

Merging #4666 (2652950) into master (cc2ab7e) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4666      +/-   ##
==========================================
+ Coverage   76.17%   76.19%   +0.02%     
==========================================
  Files         161      161              
  Lines        9891     9891              
==========================================
+ Hits         7534     7536       +2     
+ Misses       2357     2355       -2     

Impacted Files	Coverage Δ
...ack/apm-server/aggregation/txmetrics/aggregator.go	93.36% <0.00%> (ø)
beater/jaeger/common.go	91.66% <0.00%> (+8.33%)	⬆️

[apmmachine]

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Build stats

• Build Cause: Pull request #4666 updated

• • Start Time: 2021-02-01T11:21:45.267+0000

• Duration: 34 min 50 sec

• Commit: 9574203

Test stats 🧪

Test	Results
Failed	0
Passed	4361
Skipped	123
Total	4484

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• Description: tar --exclude=system-tests-linux-files.tgz -czf system-tests-linux-files.tgz system-tests

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• Description: ./.ci/scripts/sync.sh