In version 2.1045.v4ec3ed07b_e4f Branch API Plugin added options to
configure suppressing SCM trigger. Previously this feature could
be only turned on or off, now it's possible to select what to suppress
and on which branches.
(see https://github.com/jenkinsci/branch-api-plugin/pull/244)
This commit adds support for this option by allowing dictionary syntax
for `suppress-scm-triggering` element:
```
- suppress-scm-triggering:
suppression-strategy: suppress-branch-indexing
branch-regex: ^.*test.*$
```
while preserving support for currently existing syntax:
```
- suppress-scm-triggering: true
```
Change-Id: I5d0b32042fc07d674bf2f26e5b468f051077fb02
cd8c8bfbb7