Revert "add test to check if a slave instance is allocated correctly when each software instance is associated to different computer"

This reverts commit 4950c333.

add test to check if a slave instance is allocated correctly when each software instance is associated to different computer

Title is humand related name of computer, and reference is used by SlapOS
configuration.

Use My Acccount web section to expose buttons to request and revoke certificate.
Move out credentials management to button.
Reuse existing WebSection_viewMyAccountRender.

This supports configuration, when bridge cannot be attached with IPv6 capable
interface (like a lot of WLAN interfaces and IPv6 tunnels).

Thanks to setting ipv6_interface in slapformat configuration file, IPv6
generation will be done there, but IPv4 will be still available on bridge.

Users shall be able to instantiate software instances on their computers. This
is the most often found scenario (add *my* computer and instantiate on *it*
some software).

clean up the code because this part is related to Slave Instance and Slave Instance is obsolete

Add condition to support dictionary. This fix was needed to support Slave Instance inside parameter_dict because each Slave Instance is one dictonary

This commit also  fixes other arguments which were read  and parsed as regular
configuration files.

Previously, cert_file and key_file could  only be set from slapconsole section
but  as it's  supposed to  already been  defined in  slapos section,  then use
slapos values first, then fallback on slapconsole section.

slapconsole  should not fail  when there  is no  "slapconsole" section  in the
configuration file, as defaults should be enough.

Add new transitions to follow the same design of Software Instance and the scripts to each transition

remove stepTic because in this test the transaction should be called after create two Slave Instances with different customers and flag skip because this tests is not finished yet

Add transitions to start and stop a Slave Instance and the scripts used to each transition. The goal is to follow the same design of Software Instance