"./jstests/replsets/read_concern_uninitated_set.js" and test should be disabled in evergreen for storage engines - ephemeralForTest & mmapv1.

The test tries to run find command for read concern level -'majority'. Since storage engines -ephemeralForTest & mmapv1 does not support snapshot/read commit, the test fails with ErrorCodes::ReadConcernMajorityNotEnabled.

And, the test was added as a part of this commit.