* Further fixes of plugins.xml generation
1) Unregistration is done by name (e.g. CPU), not by file name (ov_cpu_plugin)
2) Unregistered line is searched by name="MULTI" instead of just 'MULTI' to not conflict with MULTI_WORK_MODE_AS_AUTO entry
3) Removed list of all possible plugins from ov_runtime as logic shall not rely on this (not possible to add 3rd party plugins)
* Revert ov_runtime - some CI jobs require plugins.xml even though plugins are not built
Registration - if some entry already exists in XML - don't copy it.
E.g.
- Registration of 'TEMPLATE' is performed
- Registration loops through existing plugins.xml
- If name="TEMPLATE" is found - don't take it to newContent
- If name like "myCustomPlugin" is found - take it
- As result - "myCustomPlugin" will exist after update, but old "TEMPLATE" will be removed
* Add missing change