HPCC-12719 Use 'EclAgentProcess' to get EclAgent Config

In the existing EclWatch code, 'EclAgentProcess' is used
as CompType to get EclAgent log and 'AgentExecProcess'
is used as CompType to get EclAgent config file. We
should use 'EclAgentProcess' as CompType to get EclAgent
config file.

Signed-off-by: wangkx <kevin.wang@lexisnexis.com>
Merge pull request #6743 from wangkx/h12719

HPCC-12719 Use 'EclAgentProcess' to get EclAgent Config

Reviewed-By: Gordon Smith <gordon.smith@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>