[FAB-4113] Remove some skipped unit tests.
[FAB-4113] Remove some skipped unit tests.

In order to test error handling of filesystem read/write, these tests
chmod file/dir to emulate filesystem error. However, this does not work
in the CI, because tests are run as 'root' in the container, which does
not respect access permission.

Change-Id: I4954153e52f29daa227a5b6b655a5ab6c7abd473
Signed-off-by: Jay Guo <91d7eeb83d08be0dc56ea674009c4b53383e15b3@gmail.com>

lukehuangch/fabric,lukehuangch/fabric,ckeyer/fabric,blockc/fabric,lukehuangch/fabric,blockc/fabric,lukehuangch/fabric,lukehuangch/fabric,blockc/fabric,ckeyer/fabric,manish-sethi/fabric-sidedb,jimthematrix/fabric,hyperledger/fabric,manish-sethi/fabric-sidedb,muralisrini/fabric,xixuejia/fabric,manish-sethi/fabric-sidedb,mqshen/fabric,xixuejia/fabric,lukehuangch/fabric,stemlending/fabric,mqshen/fabric,mqshen/fabric,binhn/fabric,hyperledger/fabric,binhn/fabric,blockc/fabric,ckeyer/fabric,manish-sethi/fabric-sidedb,lukehuangch/fabric,jimthematrix/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,ckeyer/fabric,manish-sethi/fabric-sidedb,ckeyer/fabric,ckeyer/fabric,mqshen/fabric,blockc/fabric,blockc/fabric,ckeyer/fabric,xixuejia/fabric,mqshen/fabric,stemlending/fabric,mqshen/fabric,mqshen/fabric,binhn/fabric,blockc/fabric,manish-sethi/fabric,muralisrini/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric,muralisrini/fabric,stemlending/fabric