Update git submodules

* Update docs/submodules/ccsdk/platform/plugins.git from branch 'master'
  to 7e1f8a90d2fd18a5169cea04b6bb53dd9288092e
  - Fix minor issues revealed by pylint
    
    Remove superfluous argument to str.format in dmaap.
    Fix two tests with the same name in dnsdesig.
    Raise a proper exception instead of bool in helm.
    
    Signed-off-by: Miroslav Los <miroslav.los@pantheon.tech>
    Issue-ID: CCSDK-1928
    Change-Id: I07ff9eaa3b25a4c7864eda2b6189d7357c887dd4
    
1 file changed