This commit upversions helm from v2.11.0 to v2.12.1.
This is necessary as support for kubernetes v1.12 support is only
introduced in helm v2.12.
Story: 2004520
Task: 28777
Depends-on: I2501cd1174f85810892e51ac8a44746302eeb120
Change-Id: I605f1ba2c7fda52d9e0bf84b6132314efad15b24
Signed-off-by: Joseph Richard <joseph.richard@windriver.com>
d3ff5a1c77