rpc_net.py would intermittently fail on Travis, probably
due to assuming that two consecutive RPC calls were atomic.
Fix this by only testing that amounts are bounded above and
below rather than equal.
Github-Pull: #12804
Rebased-From: 5a67c0524e5dc98d0e387f189545bc99863916d4
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.
* Split run_test into 4 separate tests
* Add 2 tests, getconnectioncount and getnettotals
* getnettotals - Strategy of test is to get the network stats before and after a ping. The difference in bytes sent/received is the bytes needed for a ping/pong.
John Newbery