Add energy metrics to load-watcher (#73)

* Add energy metrics to load-watcher

* switch case in promResults2MetricMap()

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Co-authored-by: jose <jose.pedro.pereira.dos.santos@partner.ibm.com>

resolve issue #56 (#62)

* resolve issue #56

* quick fix of CA x509 issue

* fix the error loading CA file

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Co-authored-by: root <root@e23-h05-740xd.alias.bos.scalelab.redhat.com>

Update option for SignalFx

(cherry picked from commit 3294221)

Add health check API (#41)

* Uptick go version

* Add test stage

* Add health check for metric provider servers

* Address review comments

Signed-off-by: Abdul Qadeer <aqadeer@paypal.com>
(cherry picked from commit 32392ed)

Add Gren badge

Populate metrics initially in cache before returning (#21)

Signed-off-by: Abdul Qadeer <aqadeer@paypal.com>
(cherry picked from commit ef1b4d7)

Improvement for #5 and #12 (#13)

* resolve issue #5 and #12

* remove redundant empty lines and fix some comments

* Update main.go

sort library imports

* Address review comments
Refactor code, move metricsprovider to internal

Signed-off-by: Abdul Qadeer <aqadeer@paypal.com>

* Update copyright in Makefile

* Delete manifests directory

Signed-off-by: Abdul Qadeer <aqadeer@paypal.com>

Co-authored-by: Abdul Qadeer <aqadeer@paypal.com>