[context] Add a troubleshooting section on the wiki

[dann1]

What logs to check, what services and processes to look for when issues happen. How to debug manually, etc.

Take a look at https://support.opennebula.pro/hc/en-us/articles/360043624572-Troubleshooting-the-OpenNebula-Contextualization-Process

Consider both Windows and Linux context troubleshooting

[dann1]

Added to 6.10 release notes