Problem updates

[PierreMartinon]

Hi @ocots @jbcaillau @Nico77310

After some minor tweaking I got most problems passing the 1% relative error on the objective :-)
How do we proceed for the merging ? I started from the 78-dev branch but the two may have diverged a bit.

NB. there will be 2 lines to update to be compatible with OptimalControl 1.1 (linked to the change in direct_transcription).

     Testing Running tests...
Testing: quick
beam Objective rel error 0.0093 Test Passed
bioreactor Objective rel error 0.00032 Test Passed
cart_pendulum Objective rel error 6.6e-05 Test Passed
chain Objective rel error 1.6e-12 Test Passed
dielectrophoretic_particle Objective rel error 2.8e-17 Test Passed
double_oscillator Objective rel error 0.0064 Test Passed
ducted_fan Objective rel error 0.00015 Test Passed
electrical_vehicle Objective rel error  0.25 Test Broken JuMP: 4e+05 vs OC: 1.2e+06
glider Objective rel error 1.3e-13 Test Passed
insurance Objective rel error 0.0036 Test Passed
jackson Objective rel error 3.6e-17 Test Passed
moonlander Objective rel error 7.8e-05 Test Passed
quadrotor Objective rel error 3.9e-05 Test Passed
robbins Objective rel error 0.0052 Test Passed
robot Objective rel error 2.2e-08 Test Passed
rocket Objective rel error 1.4e-09 Test Passed
space_shuttle Objective rel error 5.7e-07 Test Passed
steering Objective rel error 3e-13 Test Passed
truck_trailer Objective rel error  0.11 Test Broken JuMP:    94 vs OC:    59
vanderpol Objective rel error 1.2e-05 Test Passed

[ocots]

@PierreMartinon I think we can close this PR and delete the branch problems_update since it has been merged in 78-dev-comparison-tests.