Standerdise the controller workflow

[Karthik-K-N]

/kind feature
/area provider/ibmcloud

Describe the solution you'd like
[A clear and concise description of what you want to happen.]

CAPI has now updated to contain many more helper functions which can be used in our controller to make it more standard and more readable, There are helper functions to add finalisers, to verify if the resource is paused or not and many more.
Reference to one of the controller from CAPI: cluster controller

May be we should spend some time to clean up our controller logic and make the workflow standard across various controller.

1. Pass context to calling functions to derive logger.
2. Use CAPI provided helper functions.
3. Adopt CAPI v1beta2 changes.

• IBMPowerVSCluster controller: Adopt CAPI v1beta2 status changes and respective controller changes for IBMPowerVSCluster #2312
• IBMPowerVSMachine controller: Adopt CAPI v1beta2 status changes and respective controller changes for IBMPowerVSMachine #2272
• IBMPowerVSImage controller: Add v1beta2 changes to IBMPowerVSImage #2412
• IBMVPCCluster controller: Adopt v1beta2 conditions for IBM VPC cluster #2429
• IBMVPCMachine controller: Adopt v1beta2 conditions for IBM VPC Machine #2447

Anything else you would like to add:
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[carmal891]

/assign

[Karthik-K-N]

I am working on IBMPowerVSMachine controller changes along improving status of IBMPowerVSMachine object with #2264

[Prajyot-Parab]

@Karthik-K-N feel free to close this and cover it as part of overall enhancement issue that you created. (as discussed in community meeting)

[Karthik-K-N]

I just converted this issue as template issue and tracks all the other subsequent pending work

[Prajyot-Parab]

/unassign @carmal891

[Prajyot-Parab]

/assign @Karthik-K-N