fix(sysfs): trim newline while parsing sysfs files

[akhilerm]

Signed-off-by: Akhil Mohan akhil.mohan@datacore.com

Why is this PR required? What issue does it fix?: sysfs files like dm/uuid etc are sometimes suffixed by a newline character which need to be trimmed off for correct parsing, else it will result in incorrect device type being detected

What this PR does?: trim the newline suffix while reading from sysfs

Does this PR require any upgrade changes?:

If the changes in this PR are manually verified, list down the scenarios covered::

Any additional information for your reviewer? : Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

• [x] Fixes openebs/openebs#3499
• [x] PR Title follows the convention of <type>(<scope>): <subject>
• [x] Has the change log section been updated?
• [x] Commit has unit tests
• [ ] Commit has integration tests
• [ ] (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• [ ] (Optional) If documentation changes are required, which issue on https://github.com/openebs/openebs-docs is used to track them:

[codecov-commenter]

Codecov Report

Merging #666 (e800cb5) into develop (7094461) will increase coverage by 0.27%. The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #666      +/-   ##
===========================================
+ Coverage    44.78%   45.06%   +0.27%     
===========================================
  Files           79       79              
  Lines         3970     3970              
===========================================
+ Hits          1778     1789      +11     
+ Misses        2024     2016       -8     
+ Partials       168      165       -3     

Impacted Files	Coverage Δ
pkg/sysfs/syspath.go	84.16% <ø> (+1.66%)	:arrow_up:
pkg/sysfs/util.go	81.81% <100.00%> (ø)
cmd/ndm_daemonset/probe/addhandler.go	68.95% <0.00%> (+0.98%)	:arrow_up:
cmd/ndm_daemonset/probe/udevprobe.go	49.01% <0.00%> (+2.37%)	:arrow_up:

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