use nginx vts module version 0.1.14

[DanCech]

This patch updates the version of https://github.com/vozlt/nginx-module-vts used by nginx-slim to 0.1.14 and updates nginx-ingress-controller to use nginx-slim 0.16.

Update to VTS module version 0.1.14

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[k8s-reviewable]

This change is 

[coveralls]

Coverage decreased (-0.03%) to 46.953% when pulling cdf37027e545d7e000bf854084d334142f2b6fdb on DanCech:vts0.1.14 into 186615d on kubernetes:master.

[aledbf]

@DanCech please keep the version in 0.16 (is not released yet)

[DanCech]

@aledbf done!

[aledbf]

/lgtm

[aledbf]

@DanCech thanks!

[coveralls]

Coverage increased (+0.02%) to 46.998% when pulling 485098f on DanCech:vts0.1.14 into 186615d on kubernetes:master.

[coveralls]

Coverage remained the same at 46.983% when pulling 485098f on DanCech:vts0.1.14 into 186615d on kubernetes:master.