AddingPowerSupport_CI/Testing (#337)

- Adding power support and go latest go versions 1.12/1.13/1.14/1.15 to keep the code updated with the latest go versions.
- Using the latest supported go versions ie 1.13/1.14/1.15 as lower versions are not supported.

Author: santosh653

.travis.yml

@@ -1,9 +1,13 @@
+arch:
+  - amd64
+  - ppc64le
 language: go
 
 go:
-  - "1.9"
-  - "1.10"
-  - "1.11"
+  - "1.13"
+  - "1.14"
+  - "1.15"
+ 
 
 sudo: false