Issue 538: Support of customized pod annotation for Pravega pods

[anishakj]

Signed-off-by: anishakj [email protected]

Change log description

Added new spec parameter for annotations so that annotations can be customized

Purpose of the change

Fixes #538

What the code does

Provide support to configure annoatations

How to verify it

Verify that annotation configured are shown in pod describe output

[codecov-commenter]

Codecov Report

Merging #543 (e4d5655) into master (7ac2337) will increase coverage by 0.16%.
The diff coverage is 91.66%.

@@            Coverage Diff             @@
##           master     #543      +/-   ##
==========================================
+ Coverage   71.78%   71.95%   +0.16%     
==========================================
  Files          15       15              
  Lines        3640     3662      +22     
==========================================
+ Hits         2613     2635      +22     
  Misses        911      911              
  Partials      116      116              

Impacted Files	Coverage Δ
pkg/apis/pravega/v1beta1/zz_generated.deepcopy.go	95.83% <75.00%> (-0.66%)	⬇️
pkg/apis/pravega/v1beta1/pravega.go	98.11% <100.00%> (+0.11%)	⬆️
pkg/apis/pravega/v1beta1/pravegacluster_types.go	26.14% <100.00%> (+1.04%)	⬆️
pkg/controller/pravega/pravega_controller.go	90.00% <100.00%> (ø)
pkg/controller/pravega/pravega_segmentstore.go	100.00% <100.00%> (ø)

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[SrishT]

LGTM