WIP-Spark Tasks

[rao-abdul-mannan]

This PR includes following tasks:

TotalEventsDailyTask UserActivityTask CourseActivityPartitionTask InternalReportingUserActivityPartitionTask

Note: Not to be merged with master branch yet

[codecov[bot]]

Codecov Report

Merging #476 into master will decrease coverage by 0.89%. The diff coverage is 31.16%.

@@            Coverage Diff            @@
##           master     #476     +/-   ##
=========================================
- Coverage   77.68%   76.79%   -0.9%     
=========================================
  Files         193      196      +3     
  Lines       21344    22004    +660     
=========================================
+ Hits        16582    16898    +316     
- Misses       4762     5106    +344

Impacted Files	Coverage Δ
edx/analytics/tasks/launchers/remote.py	0% <0%> (ø)	:arrow_up:
edx/analytics/tasks/util/manifest.py	98.03% <100%> (+0.03%)	:arrow_up:
...alytics/tasks/insights/tests/test_user_activity.py	100% <100%> (ø)	:arrow_up:
edx/analytics/tasks/util/constants.py	100% <100%> (ø)
edx/analytics/tasks/util/spark_util.py	17.8% <17.8%> (ø)
edx/analytics/tasks/common/spark.py	26.12% <26.12%> (ø)
...dx/analytics/tasks/insights/location_per_course.py	79.5% <30%> (-6.95%)	:arrow_down:
edx/analytics/tasks/insights/user_activity.py	57.35% <34.14%> (-16.34%)	:arrow_down:
edx/analytics/tasks/monitor/overall_events.py	77.41% <50%> (-17.32%)	:arrow_down:
edx/analytics/tasks/monitor/total_events_report.py	94.59% <75%> (+0.15%)	:arrow_up:
... and 9 more

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