switch signing to azure key vault #319

Job	Run time
test-bsd	3m 4s
get-version	8s
test-osx	50s
test-linux	7m 35s
test-win	4m 40s
build-osx (darwin, x86_64)	1m 3s
dist-linux-osx	48s
build (linux, i386)	30s
build-osx (darwin, aarch64)	20s
build-win (windows, i386)	1m 26s
build (linux, x86_64)	32s
build-win (windows, x86_64)	1m 20s
build (linux, aarch64)	15s
build-win (windows, aarch64)	1m 20s
build (freebsd, i386)	30s
dist-win	49s
build (freebsd, x86_64)	34s
build (freebsd, aarch64)	28s
pkg-deb (linux, i386)	44s
pkg-rpm (linux, i386)	24s
pkg-deb (linux, x86_64)	1m 16s
pkg-rpm (linux, x86_64)	23s
pkg-deb (linux, aarch64)	51s
pkg-rpm (linux, aarch64)	15s
pkg-osx (darwin, x86_64)	24s
pkg-osx (darwin, aarch64)	26s
sign-win (windows, i386)	32s
sign-win (windows, x86_64)	41s
sign-win (windows, aarch64)	35s
integration-test-osx (darwin, x86_64)	34s
integration-test-linux (linux, x86_64)	42s
clean-tmp-files (linux, i386)	2s
clean-tmp-files (linux, x86_64)	3s
clean-tmp-files (linux, aarch64)	7s
pkg-msi	0s
integration-test-windows	0s
clean-tmp-winbin	0s
clean-tmp-dist	0s
make-release	0s
upload-osx-pkg-assets	0s
upload-binary-release-assets	0s
upload-linux-deb-assets	0s
upload-linux-rpm-assets	0s
upload-windows-release-assets	0s
	34m 11s

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