YARN-2945. Fixing the CHANGES.txt to have the right JIRA number.
YARN-2945. Fixing the CHANGES.txt to have the right JIRA number.

(cherry picked from commit cf831565e8344523e1bd0eaf686ed56a2b48b920)

Microsoft-CISL/hadoop-prototype,zrccxyb62/hadoop,Microsoft-CISL/hadoop-prototype,zrccxyb62/hadoop,Microsoft-CISL/hadoop-prototype,Microsoft-CISL/hadoop-prototype,Microsoft-CISL/hadoop-prototype,zrccxyb62/hadoop,zrccxyb62/hadoop,Microsoft-CISL/hadoop-prototype,Microsoft-CISL/hadoop-prototype,zrccxyb62/hadoop,Microsoft-CISL/hadoop-prototype,zrccxyb62/hadoop,zrccxyb62/hadoop