Update replication plugin to latest master revision
Update replication plugin to latest master revision

Adds the following commit:

fb0b839 - Do not remove replication tasks if they are retrying

Change-Id: I0809c1b5f44cdec2b429c0c683226078bd03f0ff

GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit