[FAB-11329] fix flakes in pvtdata e2e tests
[FAB-11329] fix flakes in pvtdata e2e tests

this change set aims to fix intermittent failures in pvtdata e2e
test. the change set will also enable the tests after those were
disabled as a result of the failures.

FAB-11329 #done

Change-Id: Ie9f0f6498c2cb5e7d455f5d321852f17b7d834ff
Signed-off-by: nirro <3e3e316b6b4efbc83ce3ce6ac4445c3d2118b623@il.ibm.com>

xixuejia/fabric,muralisrini/fabric,manish-sethi/fabric-sidedb,jimthematrix/fabric,manish-sethi/fabric-sidedb,jimthematrix/fabric,manish-sethi/fabric-sidedb,xixuejia/fabric,binhn/fabric,manish-sethi/fabric-sidedb,binhn/fabric,muralisrini/fabric,stemlending/fabric,muralisrini/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,stemlending/fabric,manish-sethi/fabric-sidedb,hyperledger/fabric,hyperledger/fabric,xixuejia/fabric,binhn/fabric,manish-sethi/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric,stemlending/fabric