Address all Rubocop TODOs

[abotalov]

Rubocop was introduced in https://github.com/reportportal/agent-ruby/pull/43. We should address TODOs one by one - create a PR per one / several offenses to ease reviewing.

• [x] Layout/AlignArguments
• [ ] Layout/EmptyLineAfterGuardClause
• [ ] Layout/ExtraSpacing
• [ ] Layout/LeadingCommentSpace
• [ ] Layout/MultilineOperationIndentation
• [ ] Layout/SpaceAfterComma
• [ ] Layout/SpaceAroundEqualsInParameterDefault
• [ ] Layout/SpaceAroundOperators
• [ ] Layout/SpaceInsideBlockBraces
• [ ] Layout/SpaceInsideHashLiteralBraces
• [ ] Layout/TrailingWhitespace
• [ ] Lint/ParenthesesAsGroupedExpression
• [ ] Lint/UnneededRequireStatement
• [ ] Lint/UriEscapeUnescape
• [ ] Metrics/AbcSize
• [ ] Metrics/BlockLength
• [ ] Metrics/ClassLength
• [ ] Metrics/CyclomaticComplexity
• [ ] Metrics/MethodLength
• [ ] Metrics/ModuleLength
• [ ] Metrics/PerceivedComplexity
• [ ] Naming/UncommunicativeMethodParamName
• [ ] Security/YAMLLoad
• [ ] Style/BracesAroundHashParameters
• [ ] Style/CommentedKeyword
• [ ] Style/ConditionalAssignment
• [ ] Style/Documentation
• [ ] Style/EmptyElse
• [ ] Style/ExpandPathArguments
• [ ] Style/FormatString
• [ ] Style/FormatStringToken
• [ ] Style/FrozenStringLiteralComment
• [ ] Style/GlobalVars
• [ ] Style/GuardClause
• [ ] Style/HashSyntax
• [ ] Style/IfUnlessModifier
• [ ] Style/ModuleFunction
• [ ] Style/MutableConstant
• [ ] Style/NumericPredicate
• [ ] Style/PercentLiteralDelimiters
• [ ] Style/RescueStandardError
• [ ] Style/SafeNavigation
• [ ] Style/SignalException
• [ ] Style/SpecialGlobalVars
• [ ] Style/StringLiterals
• [ ] Style/SymbolArray
• [ ] Style/TernaryParentheses
• [ ] Style/TrailingCommaInHashLiteral
• [ ] Metrics/LineLength