Limits for K8s is equal to requests

[zagganas]

This PR ensures that the pod will get exactly instead of at least the resources specified by the user.

[codecov]

Codecov Report

Merging #34 (c3c2e4c) into master (27a1323) will decrease coverage by 0.28%.
The diff coverage is 44.73%.

@@            Coverage Diff             @@
##           master      #34      +/-   ##
==========================================
- Coverage   55.52%   55.23%   -0.29%     
==========================================
  Files          64       64              
  Lines        2064     2091      +27     
  Branches      217      223       +6     
==========================================
+ Hits         1146     1155       +9     
- Misses        787      803      +16     
- Partials      131      133       +2     

Impacted Files	Coverage Δ
...ain/java/uk/ac/ebi/tsc/tesk/config/GsonConfig.java	100.00% <ø> (ø)
...sc/tesk/config/swagger/OAuth2ClientProperties.java	88.88% <ø> (ø)
...bi/tsc/tesk/k8s/config/KubernetesClientConfig.java	92.85% <ø> (ø)
.../uk/ac/ebi/tsc/tesk/k8s/constant/K8sConstants.java	85.71% <ø> (ø)
...i/tsc/tesk/k8s/convert/ExecutorCommandWrapper.java	100.00% <ø> (ø)
...sc/tesk/k8s/convert/KubernetesObjectsSupplier.java	96.61% <ø> (ø)
.../tsc/tesk/k8s/convert/TaskmasterEnvProperties.java	91.66% <ø> (ø)
.../java/uk/ac/ebi/tsc/tesk/k8s/convert/data/Job.java	88.88% <ø> (ø)
.../tsc/tesk/k8s/convert/data/SingleTaskStrategy.java	90.90% <ø> (ø)
...java/uk/ac/ebi/tsc/tesk/k8s/convert/data/Task.java	93.54% <ø> (ø)
... and 6 more

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