fix for timestamp handling in coral frontier and sqlite plugins

[ggovi]

This PR contains:

• a fix for the timestamp format in insert/update with SQLite coral plugin
• a fix for the timestamp format in selecting with Frontier coral plugin

[apfeiffer1]

please test

[nclopezo]

+1
tested building cmssw-tool-conf

[ggovi]

Hi,
I'm not sure how, but this patch has broken the IB.
Some previously added frontier fixes have been reverted...

Currently investigating.

[davidlt]

Already solved for 1100 IB. patchsrc9 was used twice, thus removing one of the patches. We will put CORAL source code into git as the next step, because we used all patchsrc* commands.