BREAKING CHANGE: remove btool and replace it with splunk.rest #1047

Job	Run time
meta	8s
pre-commit	20s
compliance-copyrights	26s
fossa-scan	3m 20s
semgrep / sast-scan	22s
test-unit 3.9	1m 35s
test-unit 3.7	3m 0s
test-unit 3.12	1m 47s
test-unit 3.8	1m 42s
test-unit 3.11	1m 36s
test-unit 3.10	1m 42s
test-unit 3.13	2m 2s
test-splunk (9.3.2, d8bb32809498, false, false)	5m 2s
test-splunk (9.2.4, c103a21bb11d, false, false)	4m 35s
test-splunk (9.4.0, 6b4ebe426ca6, true, false)	3m 41s
test-splunk (9.1.7, e17104057ef0, false, true)	4m 33s
publish	2m 9s
	38m 0s

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