cf9ed307e6 qa: blocktools enforce named args for amount (MarcoFalke)
Pull request description:
Since #13669 changed some signatures, I think it might be worthwhile to enforce named args for primitive types such as amounts.
Tree-SHA512: 2733e7b6a20590b54bd54e81a09e3f5e2fadf4390bed594916b70729bcf485b048266012c1203369e0968032a2c6a2719107ac17ee925d8939af3df916eab1a6
Almost all test scripts currently need to override the __init__()
method. When they do that they need to call into super().__init__() as
the base class does some generic initialization.
This commit makes the base class __init__() call into set_test_params()
method. Individual test cases can override set_test_params() to setup
their test parameters.
