Code Cleanup

[kishen-v]

What this PR does / why we need it:
This PR contains the following changes:

• Consolidate the required binaries required for qcow2ova image generation, as the current design tends to iterate through dependencies and provide hints as and when checked.

• Replace NewPcloudEventsGetqueryParamsWithTimeout(pkg.TIMEOUT) with NewPcloudEventsGetqueryParams() as the pkg.TIMEOUT is set to 30 minutes for the API request to timeout. The default timeout with NewPcloudEventsGetqueryParams is 30 seconds and set at SDK level. The changes were tested and found to work reliably.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

**Output/Demonstration

Current behaviour:
E0224 22:36:15.117998   94081 main.go:26] check failed: exec: "qemu-img": executable file not found in $PATH
Hint: yum install qemu-img -y

Proposed:
E0224 22:40:55.066240   99013 main.go:26] check failed: executable file(s) not found in $PATH: qemu-img, growpart
Hint: yum install qemu-img -y
yum install cloud-utils-growpart -y

Release notes:

Display unavailable executables in $PATH that are required for image conversion

[ppc64le-cloud-bot]

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