fix(logs): Update Fluent Bit regex to filter log level

[SanyaKochhar]

Description: Updates the Fluent Bit regex to filter more strictly on key/value pair for log level

Affected area:

• New Functionality [ ]
• Documentation [ ]
• Install [ ]
• Control Plane [ ]
• CLI Tool [ ]
• Certificate Management [ ]
• Networking [ ]
• Metrics [ ]
• SMI Policy [ ]
• Security [ ]
• Tests [ ]
• CI System [ ]
• Performance [ ]
• Other [x]

Please answer the following questions with yes/no.

• Does this change contain code from or inspired by another project? If so, did you notify the maintainers and provide attribution?
  No

[ksubrmnn]

Glad you figured out the regex for this :)

[nshankar13]

lgtm