misc: migrate from GNU indent to clang-format

Type: make
Change-Id: I085dcd6fe826da14d456f84a23355310bdc5d1e9
Signed-off-by: Damjan Marion <damarion@cisco.com>

.clang-format

@@ -1,38 +1,21 @@
----
-AlignEscapedNewlinesLeft: true
-AlignTrailingComments: true
-AllowAllParametersOfDeclarationOnNextLine: true
-AllowShortIfStatementsOnASingleLine: false
-AllowShortLoopsOnASingleLine: false
-AllowShortFunctionsOnASingleLine: false
-AlwaysBreakBeforeMultilineStrings: false
-BreakBeforeBinaryOperators: false
-BreakBeforeTernaryOperators: true
-BinPackParameters: true
-BreakBeforeBraces: GNU
-ColumnLimit:     79
-IndentCaseLabels: false
-MaxEmptyLinesToKeep: 1
-PenaltyBreakBeforeFirstCallParameter: 19
-PenaltyBreakComment: 60
-PenaltyBreakString: 1000
-PenaltyBreakFirstLessLess: 120
-PenaltyExcessCharacter: 1000000
-PenaltyReturnTypeOnItsOwnLine: 60
-PointerBindsToType: false
-SpaceBeforeAssignmentOperators: true
-SpaceBeforeParens: Always
-SpacesBeforeTrailingComments: 1
-SpacesInParentheses: false
-SpaceInEmptyParentheses: false
-SpacesInCStyleCastParentheses: false
-SpaceAfterControlStatementKeyword: true
-Cpp11BracedListStyle: true
-Standard:        Cpp11
+# Minimal clang-format version is 8
+
+BasedOnStyle: GNU
+UseTab: Always
+SpaceAfterCStyleCast: true
 SortIncludes: false
-IndentWidth:     2
-TabWidth:        4
-UseTab:          Never
-IndentFunctionDeclarationAfterType: false
-ContinuationIndentWidth: 4
-...
+AlignConsecutiveMacros: true
+BreakBeforeTernaryOperators: false
+BreakBeforeBinaryOperators: None
+ContinuationIndentWidth: 2
+
+ForEachMacros:
+  - 'clib_bitmap_foreach'
+  - 'pool_foreach'
+  - 'pool_foreach_index'
+  - 'vec_foreach'
+  - 'vec_foreach_backwards'
+  - 'vec_foreach_index'
+  - 'vec_foreach_index_backwards'
+  - 'vlib_foreach_rx_tx'
+