The purpose of this class is to make it easy from a test program
to access the output of the REST-API. Currently it provides only
the equivalent of "maxctrl list servers", but it can be extended
if and when additional needs arise.
Right now it's implemented so that curl is executed on the 0th
MaxScale instance, using the ssh mechanism of the test framework.
The test appears to fail to connect to MaxScale due to unavailability of
connections. Theoretically, the improvement in accept speed due to
SO_REUSEPORT additions could explain the faster exhaustion of available
sockets.
Implementations of check_replication() and start_replication() for Clustrix allows to use fix_replication()
also for Clustrix nodes without checking it.
Also several attempts to check nodes after restart are added - to wait for nodes if they are not running
right after server daemon restart
'build' and 'run_test' copies public ssh keys to all created VMs
Legacy code takes keys from different locations, e.g. ~/build-scripts/team_keys which
causes errors due to lack of such files.
Now public keys goes from file defined on or if not defined
from .ssh/id_rsa.pub of current host machine
mdbci call can heppen before maxsales object creation and segfault hapens
To avoid it call of ssh for 'maxscale --version-full' is moved to the end
of Testconnections constructor
Previously Maxscale version check was in the 'check_backend', but this was
removed from the tests execution process. Now 'maxscale --version-full'
is added to nodes creation function - to call_mdbci()
Since UNIONs that would allow a column to be masked are
rejected, there is no need to check that masking is performed
since we will never get that far.
Added a test that makes sure the transaction replay cap is respected. Also
improved the logging to show how many transaction replay attemps have been
done and to log if a replay is not done due to too many attempts.
