Update sensu-plugin requirement from ~> 2.0 to >= 2, < 5

[dependabot-preview]

Updates the requirements on sensu-plugin to permit the latest version.

Changelog

Sourced from sensu-plugin's changelog.

[3.0.1] - 2018-01-07

Fixed

• locked mixlib-cli dep to ~> 1.5 as 2.0 removes ruby support for < 2.5 (@​majormoses)

[3.0.0] - 2018-12-04

Breaking Changes

• renamed event mapping utility function map_v2_event_into_v1 to match naming change to Sensu Go map_go_event_into_ruby (@​jspaleta)
• renamed mutator and handler mixin arguments from --map-v2-event-into-v1 to match naming change to Sensu Go --map-go-event-into-ruby (@​jspaleta)
• renamed envar option from SENSU_MAP_V2_EVENT_INTO_V1 to SENSU_MAP_GO_EVENT_INTO_RUBY (@​jspaleta)
• updated map_go_event_into_ruby logic to account for entity attribute refactor (@​jspaleta)

Added

• map_go_event_info_ruby now takes optional map_annotation argument to indicate annotation key
  holding json string to be mapped into ruby entity attributes
  default value is "sensu.io.json_attributes"
  optional envvar SENSU_MAP_ANNOTATION to use as environment override (@​jspaleta)
• add mutator-go-into-ruby.rb binary. This mutator command can be used to mutate Sensu Go events into Sensu Core 1.x events (@​jspaleta)

[2.7.0] - 2018-09-12

Added

• Added map_v2_event_into_v1 method to Utils for all plugin classes to use. (@​jspaleta)
• Added --map-v2-event-into-v1 runtime commandline option to base Handler and Mutator classes. (@​jspaleta)
• Alternatively set envvar SENSU_MAP_V2_EVENT_INTO_V1=1 and handlers/mutators will automatically attempt to map 2.x event data. (@​jspaleta)
• New cli option/envvar makes it possible to use sensu-plugin based handlers/mutators
  with Sensu 2.0 events until they provide native 2.0 event support internally. (@​jspaleta)
• Mapping function sets and checks for boolean event attribute 'v2_event_mapped_into_v1',
  to prevent mapping from running multiple times in same pipeline. (@​jspaleta)

[2.6.0] - 2018-08-28

Fixed

• Fix paginated_get for backward compatibility with Sensu API < 1.4 (@​cwjohnston).

[2.6.0] - 2018-08-28

Added

• Added utils method paginated_get for iteratively retrieving API responses (@​cwjohnston).

[2.5.0] - 2018-04-03

Added

• Added Handler Sensu API HTTPS support through API configuration (e.g. {"api": {"ssl": {}} (@​portertech).

[2.4.0] - 2018-02-08

Added

• Added subclass for Generic metrics output to support multiple metrics output formats (@​bergerx)

Changed

• updated metrics class inheritance hierarchy (@​bergerx)

[2.3.0] - 2017-08-17

Added

• Added subclass for InfluxDB output (@​luisdavim)

... (truncated)

Commits

• 263bb14 prep for 3.0.1 release
• c878688 update lock for mixlib-cli to ~> 1.5 as 2.0 removes ruby < 2.5 support
• 969ae8c prep for 3.0.0 release
• b271cc1 Sensu Go Enablement : Refactor for GA changes (#196)
• 6ff3ba8 prep for 2.7.0 release
• 552f5fa Sensu Handler shim for Sensu 2.0 event data. (#190)
• c3a2508 prep for 2.6.1 release
• 18ef61d update changelog for paginated_get backward compatability
• 32c8e6d update paginated_get method to avoid blocking infinitely on older API versions
• 7318366 update paginated_get specs to return unique check results
• Additional commits viewable in compare view

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