Add more context to logs Template entries don't all have the same length, not using them

[melchiormoulin]

Output of the info page (if this is a bug)

(Paste the output of the info page here)

Describe what happened:
For service discovery we can put annotations, if we miss some annotations
the datadog agents logs
Template entries don't all have the same length, not using them.

Describe what you expected:
Template entries don't all have the same length, not using them. on pod %s

Steps to reproduce the issue:
put a len(checkNames) != len(initConfigs) service discovery annotations

Additional environment details (Operating System, Cloud provider, etc):