Document and fix recorded metric forwarding (#266)

This should address most of #104

- fix target cache lookup for recorded metrics
- update documentation with examples

Also: allow overriding docker FROM target with DOCKER_IMAGE_BASE env var
(helpful for testing and runtime scenarios where /bin/sh is needed)

Document and fix recorded metric forwarding (#266)

This should address most of #104

- fix target cache lookup for recorded metrics
- update documentation with examples

Also: allow overriding docker FROM target with DOCKER_IMAGE_BASE env var
(helpful for testing and runtime scenarios where /bin/sh is needed)

Bump minor version 0.9.1 -> 0.10.0 (#290)

updated TargetV2 labels (#282)

Update opencensus-go-exporter-stackdriver to v0.13.4. (#252)

Fix reset handling by checking against previous value instead of rese…

…t value. (#263)

Bump version to 0.8.0. (#247)

Add ProxyV2 resource map (#240)

Update apps/v1beta2 to apps/v1 for GKE 1.16 compatibility. (#232)

Use statik to generate statusz template as code. (#206)

* Moving var statuszTmpl to func ServeHTTP

When trying to run $GOPATH/bin/stackdriver-prometheus-sidecar --help ,I get error panic: open statusz-tmpl.html: no such file or directory.
Moving the intialization of the statuszTmpl to func ServeHTTP which allows the use of --help

* Moving statusz-tmpl.html to a const in statusz.go and updating related files.

* Using statik as a code generator

* Updating statusz.go

* Updating statusz.go and main.go

* Updating statusz.go

* Adding dependcies from running go mod vendor

* Updating statik

Co-authored-by: Javier Kohen <jkohen@gmail.com>