Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to e21955f4146668647168248c7cdbf093fde203d3
  - Merge "switch to single quotes in robot py"
  - switch to single quotes in robot py

    double quotes is overlapping with the helm overriding when the files are
    run through python locally. switching the strings to single quotes lets
    them compile locally, to let developers make sure they are using only
    properties that exist.

    Change-Id: I2140728448fd65047d75e3ea19c38a916b651a47
    Issue-ID: OOM-1840
    Signed-off-by: DR695H <dr695h@att.com>