Updated the 2.7 branch patch to fix a minor issue in TestRMContainerAllocator.java (cherry picked from commit 8d48266720dcf0e71cfd87fef18b60a53aa1bef9)
Updated the 2.7 branch patch to fix a minor issue in TestRMContainerAllocator.java (cherry picked from commit 8d48266720dcf0e71cfd87fef18b60a53aa1bef9)