Prepare main to become new default branch (#9095)

* Update Makefile with changes from #7372

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Sync main GitHub config with master and update

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Remove unnecesary dot folders

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Sync dotfiles

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Remove unused Jepsen tests for now

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* tools: remove k8s (#6625)

Remove mintnet as discussed on team call.

closes #1941

* Restore nightly fuzz testing of P2P addrbook and pex

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Fix YAML lints

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Fix YAML formatting nits

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* More YAML nits

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* github: fix linter configuration errors and occluded errors (#6400)

* Minor fixes to OpenAPI spec to sync with structs on main

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Remove .github/auto-comment.yml - does not appear to be used

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Add issue config with link to discussions

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Adjust issue/PR templates to suit current process

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Remove unused RC branch config from release workflow

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Fix wildcard matching in build jobs config

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Document markdownlint config

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Restore manual E2E test group config

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Document linter workflow with local execution instructions

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Document and fix minor nit in Super-Linter markdownlint config

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Update .github/ISSUE_TEMPLATE/bug-report.md

Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>

* Update pull request template to add language around discussions/issues

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* .golangci.yml: Deleted commented-out lines

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* ci: Drop "-2" from e2e-nightly-fail workflow

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Address triviality concern in PR template

Signed-off-by: Thane Thomson <connect@thanethomson.com>

Co-authored-by: Marko <marbar3778@yahoo.com>
Co-authored-by: Sam Kleinman <garen@tychoish.com>
Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>

Makefile

@@ -1,5 +1,6 @@
 PACKAGES=$(shell go list ./...)
-OUTPUT?=build/tendermint
+BUILDDIR?=$(CURDIR)/build
+OUTPUT?=$(BUILDDIR)/tendermint
 
 BUILD_TAGS?=tendermint
 
@@ -286,3 +287,25 @@ endif
 contract-tests:
 	dredd
 .PHONY: contract-tests
+
+# Implements test splitting and running. This is pulled directly from
+# the github action workflows for better local reproducibility.
+
+GO_TEST_FILES != find $(CURDIR) -name "*_test.go"
+
+# default to four splits by default
+NUM_SPLIT ?= 4
+
+$(BUILDDIR):
+	mkdir -p $@
+
+# The format statement filters out all packages that don't have tests.
+# Note we need to check for both in-package tests (.TestGoFiles) and
+# out-of-package tests (.XTestGoFiles).
+$(BUILDDIR)/packages.txt:$(GO_TEST_FILES) $(BUILDDIR)
+	go list -f "{{ if (or .TestGoFiles .XTestGoFiles) }}{{ .ImportPath }}{{ end }}" ./... | sort > $@
+
+split-test-packages:$(BUILDDIR)/packages.txt
+	split -d -n l/$(NUM_SPLIT) $< $<.
+test-group-%:split-test-packages
+	cat $(BUILDDIR)/packages.txt.$* | xargs go test -mod=readonly -timeout=5m -race -coverprofile=$(BUILDDIR)/$*.profile.out