telemetry: srcrev bump 7f06f613ff..c8e3a64a1d

Krzysztof Grobelny (2):
      Implemented sensor class
      Added Periodic reportingType support to Report

Wludzik, Jozef (1):
      Add ReportManager and Report unit tests

(From meta-phosphor rev: f468ab9f91443401459572417303898ba4060e65)

Change-Id: Id8a91210331002a465ee825e13ee709c9afcb42f
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>