test: add trivial validation tests #298

Job	Run time
lint	47s
CMake-Linux	6m 34s
Depends-ARM 32-bit	1m 23s
Native-x64-Linux	33m 8s
CMake-Linux-latest	6m 15s
Depends-AARCH64	1m 17s
Native-x64-Linux-latest	31m 46s
CMake-macOS	27m 7s
Depends-Win64	1m 28s
Native-x64-macOS	1h 5m 25s
CMake-macOS-latest	24m 59s
Depends-32-bit + dash	1m 22s
Native-x64-macOS-latest	48m 3s
Depends-x86_64 Linux	1m 29s
Depends-macOS 10.12	1m 26s
ARM 32-bit [GOAL:install] [no unit or functional tests]	6m 9s
AARCH64 [GOAL:install] [no unit or functional tests]	6m 14s
Win64 [GOAL:deploy] [no unit or functional tests]	9m 34s
x86_64 Linux [GOAL:install]	37m 0s
x86_64 Linux [GOAL:install] [no GUI, no unit tests, only functional tests on legacy pre-HD wallets]	21m 50s
macOS 10.12 [GOAL:deploy] [no unit or functional tests]	5m 51s
	5h 39m 7s

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