Added ghrc.io push support for loadgen #17

Job	Run time
Integration Tests (yugabyte)	6m 36s
Requires and Core DB Tests (postgres)	2m 19s
Core DB Tests (yugabyte)	2m 35s
Unit Test (non DB)	2m 19s
Integration DB Resiliency (container)	4m 37s
Fuzz Test (non DB)	6m 25s
Lint and Build	1m 5s
Build and test all-in-one test image (container)	5m 55s
	31m 51s

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